CN103915020B - Teaching gravity accelerates one degree of survey meters - Google Patents
Teaching gravity accelerates one degree of survey meters Download PDFInfo
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- CN103915020B CN103915020B CN201410153421.8A CN201410153421A CN103915020B CN 103915020 B CN103915020 B CN 103915020B CN 201410153421 A CN201410153421 A CN 201410153421A CN 103915020 B CN103915020 B CN 103915020B
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- teaching
- degree
- protection cylinder
- survey meters
- gravity accelerates
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- 230000005484 gravity Effects 0.000 title claims abstract description 29
- 239000011521 glass Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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Abstract
The invention discloses a kind of teaching gravity accelerates one degree of survey meters, comprise a ball, described teaching gravity accelerates one degree of survey meters also comprises a protection cylinder, the inside of described protection cylinder is provided with a spirality channel, the opening at the two ends of described spirality channel is separately positioned in the both ends of the surface up and down of described protection cylinder, and the aperture of described spirality channel is greater than the diameter of described ball.The advantage of teaching gravity accelerates one degree of survey meters of the present invention is: with spirality channel, and can produce longer passage in smaller size smaller, small volume, measuring accuracy is higher, can stimulate the desire for knowledge of student preferably.
Description
Technical field
The present invention relates to a kind of instruments used for education instrument, more precisely a kind of teaching gravity accelerates one degree of survey meters.
Background technology
Its acceleration can be calculated by chamfer distance and time by measuring ball, and then calculate that acceleration of gravity is that a kind of interest is comparatively strong, fairly simple, easy to operate, the easy left-hand seat of principle, experiment that required equipment cost is lower, the curiosity of student to science and technology can be improved by this experiment, evoke the desire for knowledge of student.But this instruments used for education of the prior art need larger-size inclined-plane to complete experiment, and cost is higher, and interest is lower, and measuring accuracy is lower, the desire for knowledge of student can not be inspired preferably.
Summary of the invention
The present invention mainly solves the technical matters existing for prior art, thus provide a kind of with spirality channel, longer passage can be produced in smaller size smaller, small volume, measuring accuracy is higher, can stimulate the teaching gravity accelerates one degree of survey meters of the desire for knowledge of student preferably.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals:
A kind of teaching gravity accelerates one degree of survey meters, comprise a ball, described teaching gravity accelerates one degree of survey meters also comprises a protection cylinder, the inside of described protection cylinder is provided with a spirality channel, the opening at the two ends of described spirality channel is separately positioned in the both ends of the surface up and down of described protection cylinder, and the aperture of described spirality channel is greater than the diameter of described ball.
As preferred embodiment of the present invention, the lower end of described protection cylinder is provided with a funnel.
As preferred embodiment of the present invention, the lower end of described funnel is also provided with a deceleration tube, and the inside surface of described deceleration tube is provided with elastomeric layer.
As preferred embodiment of the present invention, described teaching gravity accelerates one degree of survey meters also comprises a undertaking box, and described undertaking box is arranged on the below of described spirality channel.
As preferred embodiment of the present invention, described protection cylinder is made up of transparent material.
As preferred embodiment of the present invention, described protection cylinder is made up of transparent glass.
As preferred embodiment of the present invention, described protection cylinder is made up of transparent plastics.
The advantage of teaching gravity accelerates one degree of survey meters of the present invention is: with spirality channel, and can produce longer passage in smaller size smaller, small volume, measuring accuracy is higher, can stimulate the desire for knowledge of student preferably.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the perspective view of teaching gravity accelerates one degree of survey meters of the present invention;
Fig. 2 is the perspective view of the protection cylinder in Fig. 1;
Fig. 3 is the front view of the protection cylinder in Fig. 2;
Wherein:
1, protection cylinder; 11, spirality channel; 12, funnel; 13, deceleration tube;
2, ball; 3, box is accepted.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The advantage of teaching gravity accelerates one degree of survey meters of the present invention is: with spirality channel, and can produce longer passage in smaller size smaller, small volume, measuring accuracy is higher, can stimulate the desire for knowledge of student preferably.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of teaching gravity accelerates one degree of survey meters, comprise a ball 2, this teaching gravity accelerates one degree of survey meters also comprises a protection cylinder 1, the inside of this protection cylinder 1 is provided with a spirality channel 11, the opening at the two ends of this spirality channel 11 is separately positioned in the both ends of the surface up and down of this protection cylinder 1, and the aperture of this spirality channel 11 is greater than the diameter of this ball 2.The physical dimension that this spirality channel 11 is conducive to reducing whole teaching gravity accelerates one degree of survey meters is set, thus reduces production cost and portability, the translational speed of this ball 2 can also be reduced simultaneously, extend the time that it rolls, be conducive to accurate Measuring Time.
During experiment, stopwatch is used to measure ball 2 by the time t required for this spirality channel 11.
The distance L that this ball 2 scrolls through is calculated according to the formula of mathematical of helix:
Wherein: π is circular constant; D is screw diameter; D is pitch; H is helical length, also the height of i.e. this protection cylinder 1.
The acceleration a of this ball 2 can be calculated by the relevant knowledge in physics:
Known again by the relevant knowledge in physics:
It is more than simultaneous that three formula can solve gravity acceleration g:
As shown in Figure 2 and Figure 3, the lower end of this protection cylinder 1 is provided with a funnel 12.Due to ball 2 roll out in this spirality channel 11 time, direction and surface level out of plumb, easily cause this ball 2 to be lost, arrange this funnel 12 can make this ball 2 to immediately below injection, not easily lose.
As shown in Figure 1, Figure 2, Figure 3 shows, the lower end of this funnel 12 is also provided with a deceleration tube 13, and the inside surface of this deceleration tube 13 is provided with elastomeric layer.This deceleration tube 13 is set, the translational speed of ball 2 can be reduced, prevent this ball 2 from losing further.
As shown in Figure 1, this teaching gravity accelerates one degree of survey meters also comprises a undertaking box 3, and this undertaking box 3 is arranged on the below of this spirality channel 11.Arrange this undertaking box 3 to be convenient to accept this ball 2, prevent it from losing.
As shown in Figure 1, Figure 2, Figure 3 shows, this protection cylinder 1 is made up of transparent glass.Student is observed be positioned at the ball 2 of this protection cylinder 1, be not only conducive to the interest improving experiment, be also convenient to the position observing this ball 2 simultaneously, be convenient to accurate Measuring Time, thus calculate acceleration of gravity accurately, improve the measuring accuracy of experiment.
Use transparent glass material, be conducive to reducing the friction force between this spirality channel 11 and this ball 2, improve experimental precision.
This protection cylinder 1 also can be made up of transparent plastics, relative to transparent glass, although friction force is comparatively large, has the advantages such as deadweight is comparatively light, cost is lower, not fragile.
The material of protection cylinder 1 of the present invention preferentially adopts transparent glass.
Below only in one embodiment mentality of designing of the present invention is described, when system allows, the present invention can expand to external more functional module simultaneously, thus expands its function to greatest extent.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (7)
1. a teaching gravity accelerates one degree of survey meters, comprise a ball (2), it is characterized in that: described teaching gravity accelerates one degree of survey meters also comprises a protection cylinder (1), the inside of described protection cylinder (1) is provided with a spirality channel (11), the opening at the two ends of described spirality channel (11) is separately positioned in the both ends of the surface up and down of described protection cylinder (1), and the aperture of described spirality channel (11) is greater than the diameter of described ball (2).
2. teaching gravity accelerates one degree of survey meters according to claim 1, is characterized in that: the lower end of described protection cylinder (1) is provided with a funnel (12).
3. teaching gravity accelerates one degree of survey meters according to claim 2, it is characterized in that: the lower end of described funnel (12) is also provided with a deceleration tube (13), the inside surface of described deceleration tube (13) is provided with elastomeric layer.
4. the teaching gravity accelerates one degree of survey meters according to Claims 2 or 3, it is characterized in that: described teaching gravity accelerates one degree of survey meters also comprises a undertaking box (3), described undertaking box (3) is arranged on the below of described spirality channel (11).
5. teaching gravity accelerates one degree of survey meters according to claim 1, is characterized in that: described protection cylinder (1) is made up of transparent material.
6. teaching gravity accelerates one degree of survey meters according to claim 5, is characterized in that: described protection cylinder (1) is made up of transparent glass.
7. teaching gravity accelerates one degree of survey meters according to claim 5, is characterized in that: described protection cylinder (1) is made up of transparent plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153421.8A CN103915020B (en) | 2014-04-16 | 2014-04-16 | Teaching gravity accelerates one degree of survey meters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153421.8A CN103915020B (en) | 2014-04-16 | 2014-04-16 | Teaching gravity accelerates one degree of survey meters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103915020A CN103915020A (en) | 2014-07-09 |
| CN103915020B true CN103915020B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410153421.8A Expired - Fee Related CN103915020B (en) | 2014-04-16 | 2014-04-16 | Teaching gravity accelerates one degree of survey meters |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110930834B (en) * | 2019-11-25 | 2021-10-12 | 齐齐哈尔大学 | Experimental device and method for obtaining liquid level height difference of uniform accelerated motion |
| CN110807975B (en) * | 2019-11-25 | 2021-10-12 | 齐齐哈尔大学 | Experimental method for measuring gravitational acceleration by using overflowing liquid |
Citations (8)
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|---|---|---|---|---|
| JP2004163716A (en) * | 2002-11-14 | 2004-06-10 | Japan Synchrotron Radiation Research Inst | Acceleration model of charged particle |
| CN201060581Y (en) * | 2007-06-14 | 2008-05-14 | 孙勇 | Gravitational acceleration measurement demonstrator |
| FR2927457A1 (en) * | 2008-02-08 | 2009-08-14 | Elisee Evrard | Circular beam plate replacing device i.e. orbital lever, for gravitational centrifugal acceleration verifier in gravitational centrifugal converter, has carriage equipped with four wheels rolling on circular track arranged on ground |
| CN201993952U (en) * | 2011-03-26 | 2011-09-28 | 姚文武 | Gravitational acceleration measuring instrument |
| CN202523276U (en) * | 2012-04-29 | 2012-11-07 | 刘长坤 | Gravity acceleration tester |
| CN103217721A (en) * | 2013-04-19 | 2013-07-24 | 无锡科技职业学院 | Gravitational acceleration measuring device |
| CN103456209A (en) * | 2013-09-26 | 2013-12-18 | 南京财经大学 | Gravitational acceleration measurement demonstration device and method |
| CN203812450U (en) * | 2014-04-16 | 2014-09-03 | 陈涛 | Gravitational acceleration measuring instrument for teaching |
-
2014
- 2014-04-16 CN CN201410153421.8A patent/CN103915020B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004163716A (en) * | 2002-11-14 | 2004-06-10 | Japan Synchrotron Radiation Research Inst | Acceleration model of charged particle |
| CN201060581Y (en) * | 2007-06-14 | 2008-05-14 | 孙勇 | Gravitational acceleration measurement demonstrator |
| FR2927457A1 (en) * | 2008-02-08 | 2009-08-14 | Elisee Evrard | Circular beam plate replacing device i.e. orbital lever, for gravitational centrifugal acceleration verifier in gravitational centrifugal converter, has carriage equipped with four wheels rolling on circular track arranged on ground |
| CN201993952U (en) * | 2011-03-26 | 2011-09-28 | 姚文武 | Gravitational acceleration measuring instrument |
| CN202523276U (en) * | 2012-04-29 | 2012-11-07 | 刘长坤 | Gravity acceleration tester |
| CN103217721A (en) * | 2013-04-19 | 2013-07-24 | 无锡科技职业学院 | Gravitational acceleration measuring device |
| CN103456209A (en) * | 2013-09-26 | 2013-12-18 | 南京财经大学 | Gravitational acceleration measurement demonstration device and method |
| CN203812450U (en) * | 2014-04-16 | 2014-09-03 | 陈涛 | Gravitational acceleration measuring instrument for teaching |
Non-Patent Citations (1)
| Title |
|---|
| 《焦利秤法测量重力加速度》;何仲;《陕西教育学院学报》;20000531;第16卷(第2期);第65-66页 * |
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| Publication number | Publication date |
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| CN103915020A (en) | 2014-07-09 |
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Inventor after: Chen Tao Inventor after: Wu Cheng Inventor after: Cai Zhifeng Inventor after: Chen Tao, Wu Sheng, Cai Zhifeng, Li Lianbo Inventor before: Chen Tao Inventor before: Wu Cheng |
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Address after: Su Chen town residents Hailing District 225300 of Jiangsu city in Taizhou Province 7 Group No. 22 Patentee after: Chen Tao Address before: Jiulong Town Changxin road 225300 in Jiangsu province Taizhou City Hailing District No. 5 Patentee before: Chen Tao |
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| CB03 | Change of inventor or designer information | ||
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Inventor after: Xu Changfu Inventor before: Chen Tao Inventor before: Wu Cheng Inventor before: Cai Zhifeng Inventor before: Li Lianbo |
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Effective date of registration: 20170807 Address after: 100020 Beijing City, Changping District Huilongguan City Park South 7 Building 6 unit 401 Patentee after: Xu Changfu Address before: Su Chen town residents Hailing District 225300 of Jiangsu city in Taizhou Province 7 Group No. 22 Patentee before: Chen Tao |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20180416 |