CN106327969B - Device for vertical plane dynamics research - Google Patents
Device for vertical plane dynamics research Download PDFInfo
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- CN106327969B CN106327969B CN201611018123.3A CN201611018123A CN106327969B CN 106327969 B CN106327969 B CN 106327969B CN 201611018123 A CN201611018123 A CN 201611018123A CN 106327969 B CN106327969 B CN 106327969B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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Abstract
The invention belongs to the field of devices for vertical plane dynamics research, and particularly relates to a dynamics device for researching circular motion. The invention relates to a device which is connected with a thin wire in a circular motion on a vertical plane by a heavy object, and has the situation that experimental phenomena and theories do not accord with each other, and in order to explain the phenomena and prove the correctness of the theories, the invention provides the following device: a device for vertical plane dynamics research, including vertical panel, characterized by: an adsorption plate that is used for adsorbing the permanent magnet of vertical panel fixed connection, still include a magnetism post, magnetism post one end is adsorbed in adsorption plate, a fine rule of magnetism post other end bolt, the upper end bolt of fine rule in magnetism post, a heavy object is hung to the lower extreme of fine rule, vertical panel is equipped with one and runs through vertical panel just, the hole of reverse side, downthehole being equipped with is used for spouting the fire so that the first nozzle of burning off the fine rule as early as possible after the skew balanced position of fine rule, and the direction of spouting fire of first nozzle is: perpendicular to both the vertical panels and the thin lines.
Description
The application is that application No. is 2015100510598, the entitled devices for vertical plane dynamics research, Shen
It please be the divisional application of the application for a patent for invention of 2015-01-30 day.
Technical field
The invention belongs to involved by the device field for vertical plane dynamics research, especially research circular motion
Dynamics device.
Background technique
One filament fastens a weight and moves in a circle in perpendicular, and weight pulling force in minimum point is greater than gravity,
And minimum point pulling force it is maximum-this is all to be easy by theoretical proof, to show this phenomenon with experiment, prior art discloses
A kind of device for studying circular motion: vertical panel is used to support the pedestal of vertical panel, vertical plane positioned at vertical panel lower end
Plate is made of iron plate, further include one made of permanent magnet, shape be columnar magnetic pole, magnetic pole one end is adsorbed in vertical plane
Plate, the magnetic pole other end bolt a filament, and the upper end of filament is bolted to magnetic pole, and the lower end of filament hangs a weight.The device
Application method: weight is risen certain altitude by the first step, and: 1, so that filament is in linear state；2, filament deviates vertical position
It sets.Second step, discharges weight, and weight starts to do the movement that shape is circular arc, it may be assumed that a part of circular motion.Selection is suitable
Releasing position can achieve such effect: discharging weight in this position, magnetic pole can be forgotten about it just.Theory analysis is as follows:
The pulling force that weight is subject to is indicated with T, the gravity that weight is subject to is indicated with G, the quality of weight is indicated with m, indicates that weight passes through with v
The speed of minimum point indicates the radius of weight circular motion with r, is derived by, and then, it is bigger to obtain minimum spot speed v, pulling force
T bigger conclusion.Assist explaining with the experiment: magnetic pole is forgotten about it, and illustrates that pulling force T force of gravity is big.Experimental implementation person recorded this
The video of experiment, when playing video frame by frame, discovery: magnetic pole is fallen down in weight in minimum point, but obvious process
After minimum point, magnetic pole just fallen.Experimental implementation person repeats to test repeatedly, recorded video and plays, is found frame by frame every time
The phenomenon.This phenomenon and theory are not inconsistent.It was not found by people before this phenomenon: slow play just to be observed that this
A phenomenon.It is outwelled from weight by minimum point to magnetic pole, about lasts 0.2 second.0.2 second time, the about device hang
1/the 8 of weight period of single pendulum are hung, in this 0.2 second, the distance that weight passes through is about 2/3rds of amplitude, filament and perpendicular
Histogram to angle be about 40 degree.So not going out the phenomenon, when slow play, Ke Yicong usually from the time
The phenomenon is observed in the distance of weight deviation equilbrium position.
For stringent, the experiment and theory are not inconsistent, which should not be used in the dynamic (dynamical) teaching of circular motion.It changes
Sentence is talked about: being researched and developed a new device, can be demonstrated the experiment that minimum point pulling force is greater than gravity, and overcome drawbacks described above.
Since research and develop the problem of new device is it is necessary to know existing apparatus go out where.There are two types of sayings: 1, filament
Deformation needs the time, this time is about 0.2s, and filaments is waited to complete deformation, and magnetic pole is just drawn by bigger pulling force
?.2, magnetic pole, which just has begun in weight by minimum point, topples over, and still, the length of magnetic pole falls short of, after 0.2 second,
It will become apparent from carrying out magnetic pole outwelling.Both sayings sound it is all reasonable, if determining which kind of saying is correct with theoretical knowledge,
This is extremely complex theoretical question.
About this phenomenon, there are also other explanations, those explanations can directly be excluded by theory analysis, so, in this theory
It is not just described in bright book.
The present invention proposes a kind of device, which can be with: 1, verifying above two saying, which kind of is correct.2, overcome existing dress
The shortcoming set, and reach the beneficial effect that experimental phenomena is consistent with theory.
Summary of the invention
Technical solution used by the present invention overcomes the shortage of prior art is:
For the device of vertical plane dynamics research, including vertical panel, it is used to support vertically positioned at vertical panel lower end
The pedestal of panel, it is characterized in that: vertical panel is made of refractory material, vertical panel is fixedly connected with one for adsorbing permanent magnet
Adsorption plate, adsorption plate be used for adsorb permanent magnet that face be perpendicular,
Further include one made of permanent magnet, shape be columnar magnetic pole, magnetic pole one end is adsorbed in adsorption plate, and magnetic pole is another
One end bolts a filament,
The upper end of filament is bolted to magnetic pole, and the lower end of filament hangs a weight, and filament is made of the material for being easy to blow,
Vertical panel is equipped with the hole for running through vertical panel positive and negative, is equipped with for flame in hole so as to inclined in filament
From the first jet for blowing filament after equilbrium position as early as possible, and the flame direction of first jet are as follows: both perpendicular to vertical panel,
Again perpendicular to filament.
The position in hole can be: the oblique upper of weight, and: it is close but do not coincide with the vertical line where filament.
The shape in hole can be with are as follows: arc-shaped.
Can also include: using by filament perpendicular as the plane of symmetry, with the symmetrically arranged second nozzle of first jet,
And the flame direction of second nozzle are as follows: not only perpendicular to vertical panel, but also perpendicular to filament.
Filament can be cotton thread.
Adsorption plate can be fabricated from iron.
Magnetic pole shape can be cylindrical body.
The configuration of the present invention is simple does related experiment with the present invention, and experimental phenomena can be allowed to be consistent with theory analysis perfection.
Detailed description of the invention
Fig. 1 is the front view of the prior art.
Fig. 2 is the side view of the prior art.
Fig. 3 is the front view of the embodiment of the present invention one.
Fig. 4 is the side view of the embodiment of the present invention one.
Fig. 5 is the side view of the embodiment of the present invention one.
Fig. 6 is the partial enlarged view of the embodiment of the present invention one.
Fig. 7 is the partial enlarged view of the embodiment of the present invention two.
Fig. 8 is the front view of the embodiment of the present invention three.
In figure: 1- vertical panel, 2- pedestal, 3- magnetic pole, 4- filament, 5- weight, 6- adsorption plate, the hole 7-, 8- first jet,
9- second nozzle.
Specific embodiment
Attached drawing 1,2 is the front view and side view of the prior art respectively.
Embodiment one
It is front view of the invention referring to attached drawing 3, attached drawing 4 is side view of the invention.Fig. 5 is side view of the invention,
In Fig. 5, a range is enclosed with dotted line, these ranges are displayed magnified in Fig. 6, and in other words, Fig. 6 is the part of Fig. 5
Enlarged drawing.The expression of these attached drawings:
For the device of vertical plane dynamics research, including vertical panel 1, it is used to support positioned at 1 lower end of vertical panel perpendicular
Face the pedestal 2 of plate 1 directly, it is characterized in that: vertical panel 1 is made of refractory material, vertical panel 1 is fixedly connected with one for adsorbing
The adsorption plate 6 of permanent magnet, that face that adsorption plate 6 is used to adsorb permanent magnet is perpendicular,
Further include one made of permanent magnet, shape be columnar magnetic pole 3,3 one end of magnetic pole is adsorbed in adsorption plate 6, magnetic
3 other end of column bolts a filament 4,
The upper end of filament 4 is bolted to magnetic pole 3, and the lower end of filament 4 hangs a weight 5, and filament 4 is by the material that is easy to blow
It is made,
Vertical panel 1 is equipped with the hole 7 for running through 1 positive and negative of vertical panel, is equipped with for flame in hole 7 so as to thin
Line 4 blows the first jet 8 of filament 4, and the flame direction of first jet 8 after deviateing equilbrium position as early as possible are as follows: both perpendicular to
Vertical panel 1, and perpendicular to filament 4.The position in hole 7 exists: the oblique upper of weight 5, and: it is close but where not coinciding with filament 4
Vertical line.
Explain: nozzle: first jet 8 of the present invention, second nozzle 9 refer both to the nozzle of flame, the nozzle category of flame
In the prior art, such as the nozzle of following webpage introduction:
Http:// detail.tmall.com/item.htm? spm=a230r.1.14.18.RhvunH&id=
40119733829&ad_id=&am_id=&cm_id=140105335569ed55e27b&pm_ id=&abbucket=5
Http:// item.taobao.com/item.htm? spm=a230r.1.14.279.RhvunH&id=
16026116927&ns=1&abbucket=5#detail
Http:// item.taobao.com/item.htm? spm=a230r.1.14.212.RhvunH&id=
39322048663&ns=1&abbucket=5#detail
Http:// item.taobao.com/item.htm? spm=a230r.1.14.145.RhvunH&id=
38722875361&ns=1&abbucket=5#detail
Http:// item.taobao.com/item.htm? spm=a230r.1.14.34.SX1kPc&id=
18445364256&ns=1&abbucket=5#detail
Http:// detail.tmall.com/item.htm? spm=a230r.1.14.59.SX1kPc&id=
13974025302&abbucket=5
Because above-mentioned webpage is edited by the businessman of www.taobao.com, it is unable to ensure above-mentioned webpage and is always shown as
Nozzle, it is other commodity that perhaps when businessman, which will edit the webpage,.
How to allow nozzle flame, belong to the prior art, for example oxygen-acetylene burns flame, such as portable propane flame
Device, this is all the prior art.The flame that nozzle sprays can have auxiliary equipment to adjust the size of flame, keep flame very thin,
This is also the prior art.
Magnetic pole 3: being adsorbed in adsorption plate 6 by application method, and adsorption plate 6 can be fabricated from iron, and first not flame makes weight 5 inclined
From equilbrium position, and ensure that the shape of filament 4 is straight line, and ensure that filament 4 is parallel to vertical panel 1, then release weight
Object 5, many experiments find this position: when discharging weight 5 in the position, weight 5 can forget about it magnetic in circular motion just
Column 3.Mark the position.For the convenience of statement, which is denoted as location A.
Weight 5 is pinched with hand, weight 5 is made to be located at location A, then, nozzle flame is allowed, adjusts the size of flame, make flame
Firepower is concentrated, and flare is fine.
Discharge weight 5, make filament 4 just through vertical direction after, just cut off immediately by flare.
The above presentation process full name is recorded a video, then slow play, in figure 5 it can be seen that filament 4 is just through vertical direction, filament 4
It is just blown, at the same time, the pulling force that filament 4 generates disappears, and magnetic pole 3 still maintains horizontal direction and is adsorbed on adsorption plate 6, passes through
The about 0.2 second time, hence it is evident that observe that magnetic pole 3 is toppled over.
Thus illustrate: 1, the experiment is made of the prior art and does not see that weight 5 forgets about it magnetic pole 3 in minimum point, is not
Because the deformation of filament 4 needs the reason of corresponding time, but because toppling over for magnetic pole 3 is a process from slow to fast, incline
Initial stage, even if slow motion plays video, it is also difficult to find that magnetic pole 3 is obviously toppled over.It, can with device of the present invention
To prove: for weight 5 in minimum point, pulling force truly has maximum value, and pulling force is greater than the gravity of weight 5.
The position in hole 7 exists: the oblique upper of weight 5, and: vertical line that is close but not coinciding with 4 place of filament.Close to this
A word, usually unclear statement, still, by above-mentioned introduction, those skilled in the relevant arts are it is understood that close to referring to:
Filament 4 blows the position of filament 4 after vertical position as early as possible.Why not filament 4 too late can be blown? because of too late burning
Disconnected filament 4 still sees that weight 5 obviously have passed through minimum point, magnetic pole 3 is not still outwelled in video slow play.Because
The flame of nozzle injection has certain width, so, flame cannot just blow filament 4 when filament 4 is located at vertical direction.It wants
Reach such effect: 1, for filament 4 in the moment by vertical position, flame burns continuous filament 4,2, and filament 4 passes through vertical position
It postpones, just blows filament 4 as early as possible.In this way explain after, those skilled in the relevant arts it can be understood that " close " two word meaning,
" close " such statement just becomes clear.If that also feels is unclear close to two words, can state are as follows: the position in hole 7 exists:
The top of 5 equilbrium position of weight, vertical direction apart from 5 upper end 1-3cm of weight, and: it is vertical straight where horizontal direction distance filament 4
Line 1-4cm.
Why not with knife cut off filament 4? knife can no doubt cut off filament 4, and still, knife also changes weight 5 simultaneously
The radius of circular motion, then causes pulling force to increase, and magnetic pole 3 is outwelled in this case, and can not demonstrate is that radius reduction causes
Or magnetic pole 3 topple over it is relatively slow caused by result.
Those skilled in the relevant arts are it is to be understood that flame contact filament 4 will allow, rather than nozzle itself contacts filament 4.
Because nozzle temperature is very high, vertical panel 1 is made of refractory material.Such as the ceramic tile of apparatus for building.It is resistance to
Fiery material is not often attracted by permanent magnet, so, vertical panel 1 is fixedly connected with one for adsorbing the adsorption plate 6 of permanent magnet.For
Ensure that magnetic pole 3 is horizontal, can allow that face of adsorption plate 6 for adsorbing permanent magnet is perpendicular.3 shape of magnetic pole can be
Cylindrical body.
The flame direction of first jet 8 are as follows: not only perpendicular to vertical panel 1, but also perpendicular to filament 4.The flame that nozzle sprays,
There is certain force to filament 4, so, blowing filament 4 perpendicular to filament 4 is the way for reducing error.
How first jet 8 is installed in hole 7, is the prior art, can be fixedly installed, can also removably connect
It connects, hand-held welding torch can also be used, nozzle is only allowed to protrude into hole 7.
Filament 4 is blown with flame, if only see this method, it is absolutely not creative.But the invention solves
Not instead of how technical problem does not cut off filament 4: 1, verifying two kinds of sayings, which kind of is correct.2, provide an experiment and theoretical phase
The technical solution of symbol.It was found that be never found the problem of, this is inherently creative.
Filament 4 is blown with nozzle flame, filament 4 can be blown with the extremely short time.The most handy cotton thread of filament 4, cotton thread are met
The flame issued to nozzle is almost instantaneously just blown.
Since the present invention say can flame nozzle, then those skilled in the relevant arts it is to be understood that the present invention use when
Time will be configured with combustion gas and provide the corollary equipments such as device, fuel gas transportation pipeline, gas quantity or oxygen quantity regulating device, this is all
The prior art.
Embodiment two
It is the technical solution that the present invention is optimized by attached drawing 6 referring to attached drawing 7.Further include: by the perpendicular of filament 4
For the plane of symmetry, with the symmetrically arranged second nozzle 9 of first jet 8, and the flame direction of second nozzle 9 are as follows: both perpendicular to vertical
Panel 1, and perpendicular to filament 4.
Filament 4 only is blown with a nozzle, have a deficiency: the flame of ejection can allow filament 4 to be rushed by a very little
Amount, the direction of this momentum is perpendicular to vertical panel 1 and far from vertical panel 1, even if in this way, still allowing a part of observer
(student) statement into question, they think, are the stress that flame affects filament 4 to the momentum that filament 4 applies, and then, filament 4 is drawn
Magnetic pole 3 is fallen.Such saying has certain reason: because flame is applied with a momentum to filament 4 really, although this
Momentum is extremely small.In order to overcome the momentum of this point point, another nozzle, that is, second nozzle 9 can be set, second
The flame intersection that the flame and first jet 8 that nozzle 9 issues issue is exactly the position that filament 4 passes through, in this way, carefully in point of intersection
Line 4 is perpendicular to 4 direction of filament, the momentum not applied by flame along 4 direction of filament.Certainly, two flames spray in opposite directions
To shorten the flame time as far as possible when fiery, in case equipment is damaged.
Second nozzle 9 how is fixed, the prior art is belonged to, bracket can be used, hand-held welding torch can also be used --- certainly, hand
Holding steadily ought just can be with.
Embodiment three
Referring to attached drawing 8, the shape in hole 7 are as follows: it is arc-shaped, moreover, the hole 7 of circular shape, positioned at the top of weight 5.In this way
Design to have a benefit be exactly the position of adjustable flame point.And the arc-shaped center of circle is located at magnetic pole 3 and adsorption plate 6
Junction, the arc-shaped radius are slightly less than rope length.Be slightly less than-these three words be usually do not know, still, in the application,
It is slightly less than and means: position of the position that filament 4 is blown preferably adjacent to weight 5.Filament turns over identical angle, distance
The center of circle is remoter, and the arc length passed by is longer, if blowing filament apart from center of circle proximity, may cause filament deflection angle
It is excessive.This understanding refers to explanation of this specification about " close " this word.
Above each embodiment can be used with reasonable combination.
Those skilled in the relevant arts it is to be understood that the position that is blown of filament 4 preferably adjacent to weight 5 position.
Cotton thread refers to that the filament being made into cotton, cotton thread are easy to be blown.
The configuration of the present invention is simple, as complementary experimental provision, can accomplish reality conducive to dynamic (dynamical) some problems are probed into
Phenomenon is tested to be consistent with theory.
Claims (1)
1. being used for the device of vertical plane dynamics research, including vertical panel, vertical plane is used to support positioned at vertical panel lower end
The pedestal of plate, it is characterized in that: vertical panel is made of refractory material, vertical panel is fixedly connected with one for adsorbing permanent magnet
Adsorption plate, that face that adsorption plate is used to adsorb permanent magnet is perpendicular,
The device further include one made of permanent magnet, shape be columnar magnetic pole, magnetic pole one end is adsorbed in adsorption plate, magnetic pole
The other end bolts a filament,
The upper end of filament is bolted to magnetic pole, and the lower end of filament hangs a weight, and filament is cotton thread, and vertical panel is equipped with one and passes through
It wears the hole of vertical panel positive and negative, is equipped in hole and blows the of filament after filament deviates equilbrium position for flame
One nozzle, and the flame direction of first jet are as follows: not only perpendicular to vertical panel, but also perpendicular to filament,
The position in hole exists: the oblique upper of weight, and: it is close but do not coincide with the vertical line where filament,
The position restriction of device to hole are as follows: hole is in vertical direction apart from weight upper end 1cm, and hole is perpendicular where filament in the horizontal direction
Straight straight line 1cm,
The shape in hole are as follows: arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018123.3A CN106327969B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018123.3A CN106327969B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
| CN201510051059.8A CN104575187B (en) | 2015-01-30 | 2015-01-30 | Kinetics study apparatus of vertical plane |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510051059.8A Division CN104575187B (en) | 2015-01-30 | 2015-01-30 | Kinetics study apparatus of vertical plane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106327969A CN106327969A (en) | 2017-01-11 |
| CN106327969B true CN106327969B (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610625027.9A Active CN106023737B (en) | 2015-01-30 | 2015-01-30 | For the device of vertical plane dynamics research |
| CN201611017542.5A Active CN106327968B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
| CN201510051059.8A Expired - Fee Related CN104575187B (en) | 2015-01-30 | 2015-01-30 | Kinetics study apparatus of vertical plane |
| CN201611018123.3A Active CN106327969B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610625027.9A Active CN106023737B (en) | 2015-01-30 | 2015-01-30 | For the device of vertical plane dynamics research |
| CN201611017542.5A Active CN106327968B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
| CN201510051059.8A Expired - Fee Related CN104575187B (en) | 2015-01-30 | 2015-01-30 | Kinetics study apparatus of vertical plane |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106023737B (en) * | 2015-01-30 | 2018-06-08 | 蒙城县快乐行户外用品有限公司 | For the device of vertical plane dynamics research |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210360Y (en) * | 2008-04-11 | 2009-03-18 | 袁柱豪 | Instructional medium for circumferential movement demonstration |
| CN201549104U (en) * | 2009-11-03 | 2010-08-11 | 隋一鸣 | Circular motion demonstrating device |
| CN202331997U (en) * | 2011-11-07 | 2012-07-11 | 湖州师范学院 | Energy conservation demonstrator |
| CN202434099U (en) * | 2011-12-28 | 2012-09-12 | 上海外国语大学附属大境中学 | Single pendulum vibration demonstration device |
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| CN2217826Y (en) * | 1994-10-17 | 1996-01-17 | 肖喜林 | Magnetic close-keeping type demonstration test table |
| CN2537084Y (en) * | 2002-04-18 | 2003-02-19 | 厦门外国语学校 | Circular motion demonstrating device |
| CN2593292Y (en) * | 2002-11-28 | 2003-12-17 | 黎凡 | Two-dimensional space-time tracing instrument |
| CN201188280Y (en) * | 2008-03-10 | 2009-01-28 | 张羽 | Gravity circumference dynamic instrument |
| CN201638433U (en) * | 2009-12-18 | 2010-11-17 | 长江大学 | Magnetic pendulum simple-pendulum comprehensive experimental instrument |
| CN201655102U (en) * | 2010-05-11 | 2010-11-24 | 上海市第一中学 | Force assembly and disassembly demonstrating instrument |
| CN202838755U (en) * | 2012-10-06 | 2013-03-27 | 刘昊雨 | Teaching demonstration instrument of circular motion |
| CN103794117A (en) * | 2014-01-27 | 2014-05-14 | 刘淑英 | Circular motion presentation device |
| CN103971566B (en) * | 2014-06-03 | 2016-08-17 | 济南市长清中学 | Circular motion synthesis experiment platform |
| CN203895007U (en) * | 2014-06-03 | 2014-10-22 | 济南市长清中学 | Circular motion comprehensive experimental platform |
| CN106023737B (en) * | 2015-01-30 | 2018-06-08 | 蒙城县快乐行户外用品有限公司 | For the device of vertical plane dynamics research |
-
2015
- 2015-01-30 CN CN201610625027.9A patent/CN106023737B/en active Active
- 2015-01-30 CN CN201611017542.5A patent/CN106327968B/en active Active
- 2015-01-30 CN CN201510051059.8A patent/CN104575187B/en not_active Expired - Fee Related
- 2015-01-30 CN CN201611018123.3A patent/CN106327969B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201210360Y (en) * | 2008-04-11 | 2009-03-18 | 袁柱豪 | Instructional medium for circumferential movement demonstration |
| CN201549104U (en) * | 2009-11-03 | 2010-08-11 | 隋一鸣 | Circular motion demonstrating device |
| CN202331997U (en) * | 2011-11-07 | 2012-07-11 | 湖州师范学院 | Energy conservation demonstrator |
| CN202434099U (en) * | 2011-12-28 | 2012-09-12 | 上海外国语大学附属大境中学 | Single pendulum vibration demonstration device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106327968B (en) | 2019-01-25 |
| CN106023737A (en) | 2016-10-12 |
| CN104575187B (en) | 2017-02-22 |
| CN106327969A (en) | 2017-01-11 |
| CN106327968A (en) | 2017-01-11 |
| CN104575187A (en) | 2015-04-29 |
| CN106023737B (en) | 2018-06-08 |
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