CN106327969A - Device for vertical plane dynamics research - Google Patents
Device for vertical plane dynamics research Download PDFInfo
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- CN106327969A CN106327969A CN201611018123.3A CN201611018123A CN106327969A CN 106327969 A CN106327969 A CN 106327969A CN 201611018123 A CN201611018123 A CN 201611018123A CN 106327969 A CN106327969 A CN 106327969A
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- fine rule
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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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- 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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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 Application No. 2015100510598, the invention entitled device 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
Kinetics device.
Background technology
One fine rule is fastened a weight and is moved in a circle at perpendicular, and weight pulling force when minimum point is more than gravity,
And minimum point pulling force maximum-this is all easily by theoretical proof, want to show this phenomenon with experiment, prior art discloses
A kind of device studying circular motion: vertical panel, is positioned at vertical panel lower end for supporting the base of vertical panel, vertical plane
Plate is made up of iron plate, also includes a magnetic post that be made up, that be shaped as column of permanent magnet, and magnetic post one end is adsorbed in vertical plane
Plate, a magnetic post other end piece fine rule of bolt, the upper end of fine rule is bolted to magnetic post, and the lower end of fine rule hangs a weight.This device
Using method: the first step, weight is risen certain altitude, and: 1, make fine rule be in linear state；2, fine rule deviates vertical position
Put.Second step, discharges weight, and weight starts to be shaped as the motion of circular arc, it may be assumed that a part for circular motion.Select suitably
Off-position, can reach such effect: discharge weight in this position, just magnetic post can be forgotten about it.Theory analysis is as follows:
Represent weight tension with T, represent, with G, the gravity that weight is subject to, represent the quality of weight with m, represent that weight passes through with v
The speed of minimum point, the radius representing weight circular motion with r, it is derived by, then, obtains minimum point speed v the biggest, pulling force
The conclusion that T is the biggest.With this experiment auxiliary explanation: magnetic post 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, finds: magnetic post is not used in weight and is in minimum point and falls down, but substantially passes through
After minimum point, magnetic post just falls.Experimental implementation person repeats to test repeatedly, every time recorded video playing frame by frame, all finds
This phenomenon.This phenomenon and theory are not inconsistent.Do not found by people before this phenomenon: slow play just it is observed that this
Individual phenomenon.Outwell to magnetic post through minimum point from weight, about last 0.2 second.The time of 0.2 second, it is about this device and is hanged
Hanging 1/the 8 of weight period of single pendulum, this is in 0.2 second, and the distance of weight process is about 2/3rds of amplitude, and fine rule is with perpendicular
Nogata to angle be about 40 degree.So, generally from the time, observation does not go out this phenomenon, the when of slow play, Ke Yicong
This phenomenon is observed in the distance of weight deviation equilbrium position.
For Yan Ge, this experiment and theory are not inconsistent, and this experimental provision should not be used in the dynamic (dynamical) teaching of circular motion.Change
Sentence is talked about: will research and develop a new device, can demonstrate the experiment more than gravity of the minimum point pulling force, and overcome drawbacks described above.
Since researching and developing new device, it is necessary to know existing apparatus, where is the problem.There are two kinds of sayings: 1, fine rule
Deformation requires time for, and this time is about 0.2s, waits fine rule to complete deformation, and magnetic post is just drawn by bigger pulling force
Fall.2, magnetic post just has begun to topple over through minimum point at weight, but, the length of magnetic post falls short of, after 0.2 second,
Will become apparent from magnetic post to outwell.Both sayings sound the most reasonable, if judging which kind of saying is correct with theoretical knowledge,
This is extremely complex theoretical question.
About this phenomenon, also having other to explain, those are explained and directly can be got rid of by theory analysis, so, in this theory
Bright book does not describes.
The present invention proposes a kind of device, this device can: 1, which kind of is correct for checking above two saying.2, overcome existing dress
The weak point put, and reach the beneficial effect that experimental phenomena is consistent with theory.
Summary of the invention
The present invention overcomes prior art deficiency be the technical scheme is that
For the device of vertical plane dynamics research, including vertical panel, it is positioned at vertical panel lower end for supporting vertically
The base of panel, is characterized in that: vertical panel is made up of refractory material, and the fixing connection of vertical panel one is used for adsorbing permanent magnet
Adsorption plate, adsorption plate is perpendicular for adsorbing that face of permanent magnet,
Also including a magnetic post that be made up, that be shaped as column of permanent magnet, magnetic post one end is adsorbed in adsorption plate, and magnetic post is another
One end piece fine rule of bolt,
The upper end of fine rule is bolted to magnetic post, and the lower end of fine rule hangs a weight, and fine rule is made up of the material being prone to blow,
Vertical panel is provided with a hole running through vertical panel positive and negative, is provided with for flame so that inclined at fine rule in hole
After equilbrium position, blow the first jet of fine rule as early as possible, and the flame direction of first jet be: be both perpendicular to vertical panel,
It is perpendicular to again fine rule.
The position in hole can be: the oblique upper of weight, and: close but misaligned in the vertical curve at fine rule place.
The shape in hole can be: circular arc.
Can also include: with the perpendicular through fine rule as the plane of symmetry and the symmetrically arranged second nozzle of first jet,
And the flame direction of second nozzle is: be both perpendicular to vertical panel, be perpendicular to again fine rule.
Fine rule can be cotton thread.
Adsorption plate can be fabricated from iron.
Magnetic post shapes can be cylinder.
Present configuration is simple, does related experiment by the present invention, experimental phenomena can be allowed to be consistent with theory analysis perfection.
Accompanying drawing explanation
Fig. 1 is the front view of prior art.
Fig. 2 is the test figure of prior art.
Fig. 3 is the front view of the embodiment of the present invention one.
Fig. 4 is the test figure of the embodiment of the present invention one.
Fig. 5 is the test figure of the embodiment of the present invention one.
Fig. 6 is the partial enlarged drawing of the embodiment of the present invention one.
Fig. 7 is the partial enlarged drawing 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-base, 3-magnetic post, 4-fine rule, 5-weight, 6-adsorption plate, 7-hole, 8-first jet,
9-second nozzle.
Detailed description of the invention
Accompanying drawing 1,2 is front view and the side view of prior art respectively.
Embodiment one
Seeing accompanying drawing 3, be the front view of the present invention, accompanying drawing 4 is the side view of the present invention.Fig. 5 is the side view of the present invention,
In Figure 5, one scope by dotted line, these scopes are displayed magnified in figure 6, in other words, Fig. 6 is the local of Fig. 5
Enlarged drawing.These accompanying drawings are expressed:
For the device of vertical plane dynamics research, including vertical panel 1, it is positioned at vertical panel 1 lower end perpendicular for supporting
Facing the base 2 of plate 1 directly, it is characterized in that: vertical panel 1 is made up of refractory material, the fixing connection of vertical panel 1 one is used for adsorbing
The adsorption plate 6 of permanent magnet, adsorption plate 6 is perpendicular for adsorbing that face of permanent magnet,
Also including a magnetic post 3 that be made up, that be shaped as column of permanent magnet, magnetic post 3 one end is adsorbed in adsorption plate 6, magnetic
A post 3 other end piece fine rule 4 of bolt,
The upper end of fine rule 4 is bolted to magnetic post 3, and the lower end of fine rule 4 hangs a weight 5, and fine rule 4 is by being prone to the material that blows
Make,
Vertical panel 1 is provided with a hole 7 running through vertical panel 1 positive and negative, is provided with for flame so that carefully in hole 7
Line 4 blows the first jet 8 of fine rule 4 as early as possible after deviateing equilbrium position, and the flame direction of first jet 8 is: be both perpendicular to
Vertical panel 1, is perpendicular to again fine rule 4.The position in hole 7 exists: the oblique upper of weight 5, and: close but misaligned in fine rule 4 place
Vertical curve.
Explaining: nozzle: first jet 8 of the present invention, second nozzle 9 refer both to the nozzle of flame, the nozzle of flame belongs to
In prior art, the nozzle that following webpage is introduced:
http://detail.tmall.com/item.htm？Spm=a230r.1.14.18.RhvunH&id=
40119733829&ad_id=&am_id=&cm_id=140105335569ed55e27b&pm_ id=&ab bucket=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, so, it is impossible to guarantee that above-mentioned webpage is always shown as
Nozzle, the most when businessman will edit this webpage is other commodity.
How to allow nozzle flame, belong to prior art, such as oxygen-acetylene burning flame, the most portable propane flame
Device, this is all prior art.The flame of nozzle ejection can have the size of auxiliary equipment regulation flame, makes flame very thin,
This is also prior art.
Using method: magnetic post 3 is adsorbed in adsorption plate 6, adsorption plate 6 can be fabricated from iron, the most not flame, makes weight 5 inclined
From equilbrium position, and guarantee the straight line that is shaped as of fine rule 4, and guarantee that fine rule 4 is parallel to vertical panel 1, then discharge weight
Thing 5, many experiments, finds this position: when this position release weight 5, weight 5 just can forget about it magnetic when circular motion
Post 3.This position of labelling.For the convenience stated, this position is designated as location A.
Pinch weight 5 with hands, make weight 5 be positioned at location A, then, allow nozzle flame, the size of regulation flame, make flame
Firepower is concentrated, and flare is fine.
Release weight 5, after making fine rule 4 just through vertical direction, is cut off by flare the most immediately.
Above presentation process full name is recorded a video, then slow play, in figure 5 it can be seen that fine rule 4 is just through vertical direction, fine rule 4
Just being blown, meanwhile, the pulling force that fine rule 4 produces disappears, and magnetic post 3 remains in that horizontal direction absorption, at adsorption plate 6, is passed through
The time of about 0.2 second, hence it is evident that observe that magnetic post 3 is toppled over.
Thus explanation: 1, does this experiment by prior art and does not see that weight 5 forgets about it magnetic post 3 when minimum point, be not
Because the deformation of fine rule 4 needs the reason of corresponding time, and being because toppling over of magnetic post 3 is a process from slow to fast, inclines
The starting stage fallen, even if slow motion plays video, it is also difficult to find that magnetic post 3 is substantially toppled over.Use device of the present invention, can
To prove: weight 5 when minimum point, pulling force truly have maximum, and pulling force is more than the gravity of weight 5.
The position in hole 7 exists: the oblique upper of weight 5, and: close but misaligned in the vertical curve at fine rule 4 place.Near this
Individual word, it is common that unclear statement, but, by above-mentioned introduction, various equivalent modifications is it is understood that near referring to:
Fine rule 4, after vertical position, blows the position of fine rule 4 as early as possible.Why too late can not blow fine rule 4？Because too late burning
Disconnected fine rule 4, when video slow play, still sees that weight 5 substantially have passed through minimum point, and magnetic post 3 is not the most outwelled.Because
The flame of nozzle injection has certain width, so, flame cannot just blow fine rule 4 when fine rule 4 is positioned at vertical direction.Want
Reaching such effect: 1, fine rule 4 is in the moment through vertical position, and flame burns continuous fine rule 4,2, and fine rule 4 is through vertical position
Postpone, blow fine rule 4 the most as early as possible.After so explaining, various equivalent modifications it can be understood that the implication of " close " two word,
It is clear that " close " such statement just becomes.If that also feels is unclear near two words, can be expressed as: the position in hole 7 exists:
The top of weight 5 equilbrium position, vertical direction distance weight 5 upper end 1-3cm, and: horizontal direction distance fine rule 4 place vertical straight
Line 1-4cm.
Why not cut off fine rule 4 with cutter？Cutter no doubt can cut off fine rule 4, but, cutter have also been changed weight 5 simultaneously
The radius of circular motion, then causes pulling force to increase, and magnetic post 3 is outwelled in this case, it is impossible to demonstrating is that radius reduction causes
Or magnetic post 3 topple over the result caused more slowly.
Various equivalent modifications is it is to be understood that flame contact fine rule 4 to be allowed rather than nozzle itself contact fine rule 4.
Because nozzle temperature is the highest, so, vertical panel 1 is made up of refractory material.The ceramic tile of such as apparatus for building.Resistance to
Fire material is not attracted by permanent magnet, so, vertical panel 1 is fixing connects one for the adsorption plate 6 adsorbing permanent magnet.For
Guaranteeing magnetic post 3 level, can to allow adsorption plate 6 be perpendicular for adsorbing that face of permanent magnet.Magnetic post 3 shape can be
Cylinder.
The flame direction of first jet 8 is: has both been perpendicular to vertical panel 1, has been perpendicular to again fine rule 4.The flame of nozzle ejection,
Fine rule 4 is had the effect of certain force, so, be perpendicular to fine rule 4 blowing fine rule 4 is the way reducing error.
How first jet 8 is installed with in hole 7, is prior art, can be fixedly installed, it is also possible to removably is even
Connect, it is also possible to use hand-held welding torch, only allow nozzle stretch in hole 7.
Fine rule 4 is blown, iff seeing this method, entirely without creativeness with flame.But, the invention solves the problems that
Technical problem is not how to cut off fine rule 4, but: 1, which kind of is correct to verify two kinds of sayings.2, provide an experiment and theoretical phase
The technical scheme of symbol.Finding a problem not the most being found, this is the most creative.
Blow fine rule 4 by nozzle flame, fine rule 4 can be blown with the extremely short time.The most handy cotton thread of fine rule 4, cotton thread is met
The flame sent to nozzle is almost instantaneous and just blows.
Since the present invention say can the nozzle of flame, then various equivalent modifications it is to be understood that the present invention use time
Time combustion gas to be configured with provides the corollary equipments such as device, fuel gas transportation pipeline, gas quantity or amount of oxygen adjusting means, and this is all
Prior art.
Embodiment two
See accompanying drawing 7, be the technical scheme that optimized by accompanying drawing 6 of the present invention.Also include: with the perpendicular through fine rule 4
For the plane of symmetry and the symmetrically arranged second nozzle of first jet 89, and the flame direction of second nozzle 9 is: be both perpendicular to vertically
Panel 1, is perpendicular to again fine rule 4.
Only blow fine rule 4 with a nozzle, have a deficiency: the flame of ejection can allow fine rule 4 by rushes the least
Amount, the direction of this momentum is perpendicular to vertical panel 1 and away from vertical panel 1, even if so, still allows a part of observer
(student) statement into question, they think, are that flame have impact on the stress of fine rule 4 to the momentum that fine rule 4 applies, and then, fine rule 4 draws
Fall magnetic post 3.Such saying has certain reason: because flame is applied with a momentum to fine rule 4 really, although this
Momentum is the least.In order to overcome the momentum of this point point, another nozzle, namely second nozzle 9 can be set, second
Flame that nozzle 9 sends and the flame that first jet 8 sends intersect, in point of intersection, it is simply that the position of fine rule 4 process, so, carefully
Line 4 is being perpendicular to fine rule 4 direction, the momentum not applied by flame along fine rule 4 direction.Certainly, two flames spray in opposite directions
The flame time is shortened as far as possible, in order to avoid equipment suffers damage during fire.
How to fix second nozzle 9, belong to prior art, support can be used, it is also possible to use hand-held welding torch---certainly, hands
Hold steadily when the most permissible.
Embodiment three
See accompanying drawing 8, being shaped as of hole 7: circular arc, and, the hole 7 of circular shape, it is positioned at the top of weight 5.So
The benefit that is designed be exactly to adjust the position of flame point.And the center of circle of this circular arc is positioned at magnetic post 3 and adsorption plate 6
Junction, it is long that the radius of this circular arc is slightly less than rope.Be slightly less than-these three word is the most unclear, but, in the application,
Be slightly less than means: the position that fine rule 4 is blown is preferably adjacent to the position of weight 5.Fine rule turns over identical angle, distance
The center of circle is the most remote, and the arc length passed by is the longest, if distance center of circle proximity blows fine rule, is likely to result in fine rule deflection angle
Excessive.This understanding refers to this specification explanation about " close " this word.
Each embodiment can use with reasonable combination above.
Various equivalent modifications is it is to be understood that the position that is blown of fine rule 4 is preferably adjacent to the position of weight 5.
Cotton thread refers to the fine rule made with Cotton Gossypii, and cotton thread is easy to be blown.
Present configuration is simple, is beneficial to probe into more dynamic (dynamical) problems, as complementary experimental provision, can accomplish reality
Test phenomenon to be consistent with theory.
Claims (1)
1., for the device of vertical plane dynamics research, including vertical panel, it is positioned at vertical panel lower end for supporting vertical plane
The base of plate, is characterized in that: vertical panel is made up of refractory material, and vertical panel fixes connection one for adsorbing permanent magnet
Adsorption plate, adsorption plate is perpendicular for adsorbing that face of permanent magnet,
Also including a magnetic post that be made up, that be shaped as column of permanent magnet, magnetic post one end is adsorbed in adsorption plate, the magnetic post other end
Bolt a fine rule,
The upper end of fine rule is bolted to magnetic post, and the lower end of fine rule hangs a weight, and fine rule is made up of the material being prone to blow,
Vertical panel is provided with a hole running through vertical panel positive and negative, is provided with for flame to put down in fine rule deviation in hole
Blow the first jet of fine rule after weighing apparatus position as early as possible, and the flame direction of first jet is: be both perpendicular to vertical panel, hung down again
It is straight in fine rule,
The position in hole exists: the oblique upper of weight, and: it is close but misaligned in the vertical curve at fine rule place,
Being shaped as of hole: circular arc,
Also include: with the perpendicular through fine rule as the plane of symmetry and the symmetrically arranged second nozzle of first jet, and the second spray
The flame direction of mouth is: has both been perpendicular to vertical panel, has been perpendicular to again fine rule.
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 |
|---|---|---|---|
| CN201510051059.8A CN104575187B (en) | 2015-01-30 | 2015-01-30 | Kinetics study apparatus of vertical plane |
| CN201611018123.3A CN106327969B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
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 true CN106327969A (en) | 2017-01-11 |
| CN106327969B CN106327969B (en) | 2019-02-19 |
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| CN201510051059.8A Expired - Fee Related CN104575187B (en) | 2015-01-30 | 2015-01-30 | Kinetics study apparatus of vertical plane |
| CN201611017542.5A Active CN106327968B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
| CN201610625027.9A Active CN106023737B (en) | 2015-01-30 | 2015-01-30 | For the device of vertical plane dynamics research |
| CN201611018123.3A Active CN106327969B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
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| CN201510051059.8A Expired - Fee Related CN104575187B (en) | 2015-01-30 | 2015-01-30 | Kinetics study apparatus of vertical plane |
| CN201611017542.5A Active CN106327968B (en) | 2015-01-30 | 2015-01-30 | Device for vertical plane dynamics research |
| CN201610625027.9A Active CN106023737B (en) | 2015-01-30 | 2015-01-30 | For the device of vertical plane dynamics research |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104575187B (en) * | 2015-01-30 | 2017-02-22 | 青岛农业大学 | Kinetics study apparatus of vertical plane |
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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN203895007U (en) * | 2014-06-03 | 2014-10-22 | 济南市长清中学 | Circular motion comprehensive experimental platform |
| CN103971566B (en) * | 2014-06-03 | 2016-08-17 | 济南市长清中学 | Circular motion synthesis experiment platform |
| CN104575187B (en) * | 2015-01-30 | 2017-02-22 | 青岛农业大学 | Kinetics study apparatus of vertical plane |
-
2015
- 2015-01-30 CN CN201510051059.8A patent/CN104575187B/en not_active Expired - Fee Related
- 2015-01-30 CN CN201611017542.5A patent/CN106327968B/en active Active
- 2015-01-30 CN CN201610625027.9A patent/CN106023737B/en active Active
- 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 |
|---|---|
| CN106327969B (en) | 2019-02-19 |
| CN106327968A (en) | 2017-01-11 |
| CN106023737A (en) | 2016-10-12 |
| CN106327968B (en) | 2019-01-25 |
| CN104575187A (en) | 2015-04-29 |
| CN106023737B (en) | 2018-06-08 |
| CN104575187B (en) | 2017-02-22 |
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