CN203242220U - Experimental device for measuring gravitational acceleration by using single pendulum - Google Patents
Experimental device for measuring gravitational acceleration by using single pendulum Download PDFInfo
- Publication number
- CN203242220U CN203242220U CN 201320289781 CN201320289781U CN203242220U CN 203242220 U CN203242220 U CN 203242220U CN 201320289781 CN201320289781 CN 201320289781 CN 201320289781 U CN201320289781 U CN 201320289781U CN 203242220 U CN203242220 U CN 203242220U
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- pillar
- cycloid
- pendulum
- box body
- experiment
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Abstract
The utility model discloses an experimental device for measuring gravitational acceleration by using a single pendulum. The experimental device comprises a supporting pillar, a supporting arm vertical to the supporting pillar, and a pendulum wire provided with a small iron ball, and is characterized in that: the bottom end of the supporting pillar is arranged in a supporting pillar groove of the box body, the side wall of the supporting pillar is provided with a counter, a lantern ring is movably arranged on the supporting pillar, the supporting arm is fixed on the lantern ring, the front end of the supporting arm is provided with a pendulum wire storage box, the pendulum wire provided with the small iron ball is arranged in the pendulum wire storage box, the small iron ball is provided with a sensor, a supporting arm groove is arranged in the box body, and the box body is connected with the box cover through a rotating shaft. The experimental device is used in high-school physical experimental courses, reasonable in structural design, and ingenious and novel in conception, and can automatically counter the swing frequency of the single pendulum in experiment, so that the experimenter just need to watch the second chronograph and then can get the period of the single pendulum; in addition, the pendulum wire is arranged in the middle of the storage box, so as to guarantee the pendulum wire and the support are neutral, smooth and stable, thus the experimental errors can be reduced.
Description
Technical field:
The utility model relates to the experimental provision technical field, refers in particular to a kind of the Experiment of Simple Pendulum device.
Background technology:
Utilizing Measurement of Gravity Acceleration by Simple Pendulum is the important experiment of high school physics, and the instrument of traditional the Experiment of Simple Pendulum comprises fine rule, prill, iron clamp, iron stand and stopwatch with holes, and weight hangs on the support by cycloid.Traditional instrument has following weak point: the cycle of pendulum needs artificial counting, need a people to see the number of times of the full vibration of table one personal record single pendulum, owing to putting back and forth double swerve, error easily appears in artificial counting, often needs once Success in Experiment of repeatedly repetitive operation; The length of cycloid is twined by cycloid and support and is regulated, regulate cumbersome, thereby and easily askewly fall to affect experimental error.The length of known cycloid and the cycle of pendulum can calculate acceleration of gravity; The instrument of experiment is more, is not easy to carry, and forgets that each experimental apparatus will cause whole experiment to realize.
The utility model content:
The purpose of the utility model patent is to overcome the deficiency that exists in the above-mentioned technology, and a kind of the Experiment of Simple Pendulum device is provided, and experiment equipment is easy to carry, and experimental error is little.
The purpose of this utility model realizes as follows: a kind of the Experiment of Simple Pendulum device, comprise pillar, with the vertically disposed support arm of pillar with the cycloid of little iron ball, it is characterized in that: the pillar bottom is positioned at the pillar groove of box body, the pillar sidewall is provided with counter, be movably equipped with the collar on the pillar, be fixed with support arm on the collar, supporting arm front end is provided with the cycloid receiver, be provided with the cycloid with little iron ball in the cycloid receiver, little iron ball is provided with inductor, also be provided with the support arm groove in the box body, box body connects lid by rotating shaft.
Described pillar sidewall is provided with scale mark.
Described box body upper end is provided with the handle with anti-skidding salient point.
Described cycloid is inelastic fine rule.
Described stopwatch is provided with on ﹠ off switch and reset key.
The beneficial effects of the utility model are: the utility model is used for the physics experiments of high school class, structure is reasonable in design, novelty is skillfully constructed, during experiment, this device can calculate the number of oscillations of single pendulum automatically, and the experimenter only need have an optimistic view of stopwatch, can obtain the cycle of single pendulum, in addition, cycloid be arranged in can guarantee in the middle of the receiver cycloid and support just, level and smooth and stablize, may reduce experimental error.
Description of drawings:
Fig. 1 is the utility model structural representation.
Embodiment:
With reference to Fig. 1, a kind of the Experiment of Simple Pendulum device, comprise pillar 1, with pillar 1 vertically disposed support arm 3 with the cycloid 15 of little iron ball 10, it is characterized in that: pillar 1 bottom is positioned at the pillar groove 8 of box body 12, pillar 1 sidewall is provided with counter 13, be movably equipped with the collar 2 on the pillar 1, be fixed with support arm 3 on the collar 2, support arm 3 front ends are provided with cycloid 15 receivers 5, be provided with the cycloid 15 with little iron ball 10 in cycloid 15 receivers 5, little iron ball 10 is provided with inductor 11, also is provided with support arm groove 9 in the box body 12, and box body 12 connects lid 6 by rotating shaft.Described pillar 1 sidewall is provided with scale mark 14.Described box body 12 upper ends are provided with the handle 7 with anti-skidding salient point.Described cycloid 15 is inelastic fine rule.Described stopwatch 4 is provided with on ﹠ off switch and reset key.Before the experiment, first support arm 3 is fixed on the pillar 1 by the collar 2, pillar 1 upright with pillar groove 8 in, then stopwatch 4 is carried out zero clearing by reset key, will in receiver 5, pull out with the cycloid 15 of little iron ball 10 again, make cycloid 15 freedom sagging; During experiment, the diameter that uses vernier caliper measurement to go out little iron ball 10 is designated as d; And determine the length L ＇ of cycloid 15 and L=L ＇+d/2 by the scale mark 14 on pillar 1 wall; Little iron ball 10 its perpendicular bisector of skew 5-8 degree are freely swung in perpendicular, and use stopwatch 4 record prills to finish the time T of 30-50 full vibration usefulness; Obtain used t=T/c averaging time of the each full vibration of prill; Wherein c carries out record for the number of times in the T full vibration that prill is done in the time by inductor 11 sum counters 13; Try to achieve acceleration of gravity according to formula g=4 π 2/t2, after the test, experimental provision dismantled put into box body 12, build lid 6 and get final product, experimental provision like this is easy to carry.The utility model structure is reasonable in design, novelty is skillfully constructed, during experiment, this device can calculate the number of oscillations of single pendulum automatically, the experimenter only need have an optimistic view of stopwatch 4, can obtain the cycle of single pendulum, in addition, cycloid 15 be arranged in can guarantee in the middle of the receiver 5 cycloid 15 and support just, level and smooth and stable, may reduce experimental error.
Claims (5)
1. the Experiment of Simple Pendulum device, comprise pillar, with the vertically disposed support arm of pillar with the cycloid of little iron ball, it is characterized in that: the pillar bottom is positioned at the pillar groove of box body, and the pillar sidewall is provided with counter, is movably equipped with the collar on the pillar, be fixed with support arm on the collar, supporting arm front end is provided with the cycloid receiver, is provided with the cycloid with little iron ball in the cycloid receiver, and little iron ball is provided with inductor, also be provided with the support arm groove in the box body, box body connects lid by rotating shaft.
2. the Experiment of Simple Pendulum device according to claim 1, it is characterized in that: described pillar sidewall is provided with scale mark.
3. the Experiment of Simple Pendulum device according to claim 1 is characterized in that: be provided with the handle with anti-skidding salient point on the described box body.
4. the Experiment of Simple Pendulum device according to claim 1, it is characterized in that: described cycloid is inelastic fine rule.
5. the Experiment of Simple Pendulum device according to claim 1, it is characterized in that: described stopwatch is provided with on ﹠ off switch and reset key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289781 CN203242220U (en) | 2013-05-24 | 2013-05-24 | Experimental device for measuring gravitational acceleration by using single pendulum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289781 CN203242220U (en) | 2013-05-24 | 2013-05-24 | Experimental device for measuring gravitational acceleration by using single pendulum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203242220U true CN203242220U (en) | 2013-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320289781 Expired - Fee Related CN203242220U (en) | 2013-05-24 | 2013-05-24 | Experimental device for measuring gravitational acceleration by using single pendulum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203242220U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008688A (en) * | 2014-06-09 | 2014-08-27 | 常州市零伍壹玖电子有限公司 | Slide rheostat teaching aid |
| CN104020501A (en) * | 2014-06-16 | 2014-09-03 | 四川大学 | Method for measuring gravitational acceleration of sliding of small ball guided by multiple balls and multiple sliding nests in cooperation |
| CN112505794A (en) * | 2020-11-26 | 2021-03-16 | 合肥工业大学 | Intelligent gravity acceleration measuring instrument based on conical pendulum |
-
2013
- 2013-05-24 CN CN 201320289781 patent/CN203242220U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008688A (en) * | 2014-06-09 | 2014-08-27 | 常州市零伍壹玖电子有限公司 | Slide rheostat teaching aid |
| CN104020501A (en) * | 2014-06-16 | 2014-09-03 | 四川大学 | Method for measuring gravitational acceleration of sliding of small ball guided by multiple balls and multiple sliding nests in cooperation |
| CN104020501B (en) * | 2014-06-16 | 2016-08-24 | 四川大学 | Many balls and slide more nest coordinate leading bead slip measuring gravity acceleration method |
| CN112505794A (en) * | 2020-11-26 | 2021-03-16 | 合肥工业大学 | Intelligent gravity acceleration measuring instrument based on conical pendulum |
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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: 20131016 Termination date: 20140524 |