CN201549104U - Circular motion demonstrating device - Google Patents
Circular motion demonstrating device Download PDFInfo
- Publication number
- CN201549104U CN201549104U CN2009202663140U CN200920266314U CN201549104U CN 201549104 U CN201549104 U CN 201549104U CN 2009202663140 U CN2009202663140 U CN 2009202663140U CN 200920266314 U CN200920266314 U CN 200920266314U CN 201549104 U CN201549104 U CN 201549104U
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- circular motion
- panel
- demonstrating
- bead
- rotating shaft
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Abstract
The utility model relates to a circular motion demonstrating device, comprising a pedestal and a panel on the same; a rotating shaft is arranged on the upper part of the panel; a pull rope is arranged on the rotating shaft; the other end of the pull rope is connected with a bead; a through hole is arranged on the panel; an impacting device is arranged on the lower part of the panel; when teaching the Newton first law, the panel is horizontally placed and is supported by the pedestal and the supporting legs; when teaching the circular motion, the panel is vertically placed and a block impacts the bead, thereby respectively demonstrating the Newton first law and the circular motion. The demonstrating device is convenient to demonstrate different motions, therefore, students are easy to know about the theoretical knowledge in the demonstration.
Description
Technical field
The utility model relates to a kind of physics teaching in secondary school apparatus, relates to a kind of circular motion apparatus for demonstrating specifically.
Background technology
Notion in the physical mechanics, law is more abstract hard to understand, teacher only beyonds one's depth by the explanation student in teaching process, when the explanation Newton first law, all objects are not when being subjected to the external force effect, rectilinear motion state or stationary state always remain a constant speed, owing to do not have teaching aid, teacher to be difficult for explaining, demonstrate for the student intuitively.When the explanation circular motion, in two kinds of different models, produce the condition difference of circular motion, when bead is connected by stay cord with bead circular motion center, when bead at peak, when the stay cord pulling force equals zero, the speed of bead motion this moment is the minimum speed that produces circular motion, when bead in the movement velocity of peak during greater than minimum speed, bead can be done complete circular motion, when bead in the movement velocity of peak during less than minimum speed, bead will break away from circular orbit, do inclined throw movements; When bead is connected by support bar with bead circular motion center, because bead is when peak, support bar can be given and the bead anchorage force, the minimum speed of bead when peak is zero, as long as greater than zero, bead just can move in a circle bead in the speed of peak, owing to definite mode of the minimum speed of bead when peak in two kinds of models is different with velocity magnitude, so when explanation, the student beyonds one's depth.
The utility model content
Problem to be solved in the utility model is at above problem, provides a kind of student of being easy to understand the circular motion apparatus for demonstrating of Newton first law and bead circular motion principle.
For addressing the above problem, the technical scheme that the utility model adopted is: the circular motion apparatus for demonstrating, comprise pedestal and the panel that is arranged on the pedestal, described panel top is provided with rotating shaft, described rotating shaft is provided with stay cord, the other end of described stay cord is connected with bead, and described panel is provided with through hole, and described panel bottom is provided with crash device.
As a kind of prioritization scheme, described crash device comprises slide bar, flexible member and collision block, and described collision block is sleeved on the slide bar and can be along the endwisely slipping of slide bar, and described flexible member one end is connected with an end of slide bar, and the described flexible member other end is connected with collision block.
A kind of concrete prioritization scheme, described flexible member are spring.
A kind of concrete prioritization scheme, described through hole are positioned on the circumference of radius less than pulling rope length.
A kind of concrete prioritization scheme, described rotating shaft is provided with groove.
A kind of concrete prioritization scheme, the quantity of described groove are two.
A kind of concrete prioritization scheme, described panel is provided with enclosing.
A kind of concrete prioritization scheme, the back side of described panel is provided with supporting leg.
A kind of concrete prioritization scheme is provided with support bar between described bead and the rotating shaft.
The utility model is taked above technical scheme, have the following advantages: when the explanation Newton first law, with the panel horizontal positioned, support by base and supporting leg, collision block is slided on slide bar, compression spring, decontrol collision block then, collision block and bead bump, and bead begins to move in a circle, and candle or spirit lamp are lighted be placed on the through hole, when stay cord moves to the through hole, stay cord is blown, and bead will move along the tangential direction of circumference, just changes its motion state and direction until running into enclosing; When the explanation circular motion, panel is vertically placed, stay cord or support bar are placed in the rotating shaft in the groove away from panel, and compression spring bumps collision block and bead, observe the movement locus and the movement characteristic of the bead of stay cord and two kinds of models of support bar, can change the decrement of spring, thereby change the initial velocity of bead circular motion, be convenient to observe different motion conditions, the student is understood, student's easy to understand to knowwhy.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the structural representation of circular motion apparatus for demonstrating among the utility model embodiment;
Accompanying drawing 2 is the left view of accompanying drawing 1.
Among the figure:
The 1-panel; The 2-rotating shaft; The 3-through hole; The 4-enclosing; The 5-slide bar; The 6-collision block; The 7-spring; The 8-bead; The 9-stay cord; The 10-base; The 11-groove; The 12-supporting leg.
Embodiment
Embodiment: as shown in Figures 1 and 2, the circular motion apparatus for demonstrating comprises pedestal 10 and the panel 1 that is arranged on the pedestal 10, and panel 1 top is provided with rotating shaft 2, rotating shaft 2 is provided with groove 11, the quantity of groove 11 is two, and rotating shaft 2 is provided with stay cord 9, and stay cord 9 one ends are positioned at groove 11, the other end of stay cord 9 is connected with bead 8, panel 1 is provided with through hole 3, and through hole 3 is positioned on the circumference of radius less than stay cord 9 length, and panel 1 bottom is provided with crash device.
The top of panel 1 and both sides are provided with enclosing 4, and the back side of panel 1 is provided with supporting leg 12, and when panel 1 horizontal positioned, counter plate 1 is played a supporting role.
Crash device comprises slide bar 5, flexible member and collision block 6, flexible member is a spring 7, fixedly connected with the enclosing 4 of both sides in slide bar 5 two ends, collision block 6 is sleeved on the slide bar 5, collision block 6 can axially reciprocatingly sliding along slide bar 5, one end of spring 7 is fixedlyed connected with the enclosing 4 of a side, and the other end of spring 7 is connected with collision block 6.
Carry out Newton first law when demonstration, be placed on through hole 3 places after spirit lamp or candle can being lighted, stay cord 9 is being blown, when carrying out the circular motion demonstration, can adopt stay cord 9 and support bar to demonstrate respectively.
When the explanation Newton first law,, support by base 10 and supporting leg 12 with panel 1 horizontal positioned, collision block 6 is slided on slide bar 5, compression spring 7 is decontroled collision block 6 then, and collision block 6 bumps with bead 8, bead 8 begins to move in a circle, candle or spirit lamp lighted be placed on through hole 3 places, when stay cord 9 moved to through hole 3 places, stay cord 9 was blown, bead 8 will move along the tangential direction of circumference, just change its motion state and direction until running into enclosing 4.
When the explanation circular motion, panel 1 is vertically placed, stay cord 9 is placed in the rotating shaft 2 in the groove 11 away from panel, makes collision block 6 on slide bar 5, slide compression spring 7, decontrol collision block 6 then, collision block 6 and bead 8 are bumped, observe the movement locus and the movement characteristic of bead 8, then stay cord is changed to support bar, repeat aforesaid operations, examine the movement locus and the movement characteristic of bead 8.
Can change the decrement of spring, thereby change the initial velocity of bead 8 circular motion, be convenient to observe different motion conditions, the student be understood, student's easy to understand to knowwhy.
Claims (9)
1. circular motion apparatus for demonstrating, comprise pedestal (10) and be arranged at panel (1) on the pedestal (10), it is characterized in that: described panel (1) top is provided with rotating shaft (2), described rotating shaft (2) is provided with stay cord (9), the other end of described stay cord (9) is connected with bead (8), described panel (1) is provided with through hole (3), and described panel (1) bottom is provided with crash device.
2. circular motion apparatus for demonstrating as claimed in claim 1, it is characterized in that: described crash device comprises slide bar (5), flexible member and collision block (6), described collision block (6) is sleeved on that slide bar (5) is gone up and can endwisely slipping along slide bar (5), described flexible member one end is connected with an end of slide bar (5), and the described flexible member other end is connected with collision block (6).
3. circular motion apparatus for demonstrating as claimed in claim 2 is characterized in that: described flexible member is spring (7).
4. circular motion apparatus for demonstrating as claimed in claim 1 is characterized in that: described through hole (3) is positioned on the circumference of radius less than stay cord (9) length.
5. circular motion apparatus for demonstrating as claimed in claim 1 is characterized in that: described rotating shaft (2) is provided with groove (11).
6. circular motion apparatus for demonstrating as claimed in claim 5 is characterized in that: the quantity of described groove (11) is two.
7. circular motion apparatus for demonstrating as claimed in claim 1 is characterized in that: described panel (1) is provided with enclosing (4).
8. circular motion apparatus for demonstrating as claimed in claim 1 is characterized in that: the back side of described panel (1) is provided with supporting leg (12).
9. circular motion apparatus for demonstrating as claimed in claim 1 is characterized in that: be provided with support bar between described bead (8) and the rotating shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202663140U CN201549104U (en) | 2009-11-03 | 2009-11-03 | Circular motion demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202663140U CN201549104U (en) | 2009-11-03 | 2009-11-03 | Circular motion demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201549104U true CN201549104U (en) | 2010-08-11 |
Family
ID=42604282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202663140U Expired - Fee Related CN201549104U (en) | 2009-11-03 | 2009-11-03 | Circular motion demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201549104U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023737A (en) * | 2015-01-30 | 2016-10-12 | 陈廷 | Device for vertical face kinetic studies |
| CN106872103A (en) * | 2017-03-23 | 2017-06-20 | 重庆科技学院 | Processional moment measuring device and assay method |
| CN107274762A (en) * | 2017-08-09 | 2017-10-20 | 将乐县科技馆 | A kind of circular motion demonstration resetting means |
-
2009
- 2009-11-03 CN CN2009202663140U patent/CN201549104U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023737A (en) * | 2015-01-30 | 2016-10-12 | 陈廷 | Device for vertical face kinetic studies |
| CN106327968A (en) * | 2015-01-30 | 2017-01-11 | 乌鲁木齐九品芝麻信息科技有限公司 | Device for research of vertical plane dynamics |
| CN106327969A (en) * | 2015-01-30 | 2017-01-11 | 王楚涵 | Device for vertical plane dynamics research |
| 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 |
| CN106327968B (en) * | 2015-01-30 | 2019-01-25 | 深圳旺科知识产权运营中心有限公司 | Device for vertical plane dynamics research |
| CN106327969B (en) * | 2015-01-30 | 2019-02-19 | 方小虎 | Device for vertical plane dynamics research |
| CN106872103A (en) * | 2017-03-23 | 2017-06-20 | 重庆科技学院 | Processional moment measuring device and assay method |
| CN107274762A (en) * | 2017-08-09 | 2017-10-20 | 将乐县科技馆 | A kind of circular motion demonstration resetting means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20101103 |