CN202523276U - Gravity acceleration tester - Google Patents
Gravity acceleration tester Download PDFInfo
- Publication number
- CN202523276U CN202523276U CN2012201896408U CN201220189640U CN202523276U CN 202523276 U CN202523276 U CN 202523276U CN 2012201896408 U CN2012201896408 U CN 2012201896408U CN 201220189640 U CN201220189640 U CN 201220189640U CN 202523276 U CN202523276 U CN 202523276U
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- steel ball
- acceleration
- montant
- gravity acceleration
- base
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Abstract
The utility model discloses a gravity acceleration tester, which comprises a base and a vertical bar fixed on the base. The vertical bar is uniformly provided with scales along a perpendicular direction. A steel ball fixing device is arranged on the top of the vertical bar. At least two photoelectric doors are arranged along the perpendicular direction of the vertical bar, and are electrically connected with a timer. The timer is powered on to enable a steel ball to freely fall, the timer synchronously starts timing, automatically stops timing after the steel ball passes through the photoelectric doors, and cyclically displays the falling time t of the steel ball, the falling distance h of the steel ball is measured, and a value of gravity acceleration g can be calculated according to a free-fall motion formula h=gt<2>/2. By the gravity acceleration tester, students can be directly impressed by the gravity acceleration, and conveniently understand related contents, so that teaching quality can be improved.
Description
Technical field
The utility model relates to teaching aid, particularly a kind of acceleration of gravity analyzer.
Background technology
Near the earth surface object, the acceleration that when gravitate only, has is called acceleration of gravity.The direction of acceleration of gravity straight down always.At the sustained height of areal, the acceleration of gravity of any object all is identical.The numerical value of acceleration of gravity increases with sea level elevation and reduces.When object when floor level is far smaller than earth radius, change in gravitational acceleration is little, and when overhead height was big, acceleration of gravity numerical value significantly reduced, can not think that acceleration of gravity is constant this moment.
In high school physics, acceleration of gravity is an important physical concept and physical quantity, relates to acceleration of gravity notion and application experiment in the teaching and generally all need arrange a lot of class hours; But the Students'learning effect is not ideal always; The mensuration of acceleration of gravity particularly, usually also in according to the gal before the centuries slightly the method for single pendulum check weighing power acceleration carry out, promptly with measuring the single pendulum pendulum length and all after dates utilize the cycle formula manual work of single pendulum to calculate acceleration of gravity; This method is very loaded down with trivial details; Error is also big, is not easy to observation of students study, influences quality of instruction.
Summary of the invention
The technical matters that the utility model will solve provides a kind of acceleration of gravity analyzer that can measure acceleration of gravity accurately and conveniently.
For solving the problems of the technologies described above; The utility model comprise base be fixed on the montant on the base, montant vertically is evenly equipped with groove, the montant top is provided with the steel ball stationary installation; At least be provided with two photogate along the montant vertical direction, photogate is electrically connected with timer.
After adopting said structure, connect the timer power supply, let steel ball free fall; The timer time synchronisation, timer stops timing automatically after steel ball is through two photogate, and circulation demonstrates the time t that steel ball falls; Measure object drop h then, according to movement of falling object formula h=gt
2/ 2, just can calculate the gravity acceleration g value.Utilize this device can let the student that acceleration of gravity is had more intuitive impression, be convenient to understand related content, improve the quality of teaching.
Said steel ball stationary installation is that the electromagnetism that is electrically connected with power supply is inhaled ball device, can guarantee that steel ball free falls, and improves experimental precision.
Said montant lower end is provided with the guard that is used to catch steel ball, and guard can be caught the steel ball of accomplishing the movement of falling object, prevents to lose after steel ball lands.
Said base is an A-frame, has increased the steadiness of instrument, has improved the anti-seismic performance of instrument, helps improving experimental precision.
Said montant bottom is provided with spirit-leveling instrument, and base is provided with horizontal adjustment bolt, is convenient to regulate the verticality of instrument, improves experimental precision.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain:
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1; The acceleration of gravity analyzer comprises base 1 and is fixed on the montant 2 on the base 1, and montant 2 vertically is evenly equipped with groove 3, and montant 2 tops are provided with steel ball stationary installation 4; Steel ball stationary installation 4 is that the electromagnetism that is electrically connected with power supply is inhaled ball device; At least being provided with two along montant 2 vertical direction can move up and down and can be fixed on the photogate 5 on the montant along montant 2, and photogate 5 is electrically connected with timer 6, and montant 2 lower ends are provided with the guard 7 that is used to catch steel ball; Guard 7 can be caught the steel ball of accomplishing the movement of falling object, prevents to lose after steel ball lands.Base 1 is an A-frame, has increased the steadiness of instrument, has improved the anti-seismic performance of instrument, helps improving experimental precision.Montant 2 bottoms are provided with spirit-leveling instrument 8, are equipped with horizontal adjustment bolt 9 on three supports of base 1, are convenient to regulate the verticality of instrument, improve experimental precision.
During experiment, regulate horizontal adjustment bolt 9 earlier, make leveling bubble placed in the middle, two photogate 5 are moved on to upper and lower two scale places respectively; Connect timer 6 power supplys, synchro switch is pushed on " suction " position, electromagnetism is inhaled the ball device energising; Steel ball is held, make screen display " 0.00 ", synchro switch is pushed on " putting " position by reset key; Let steel ball free fall, the timer time synchronisation, timer 6 stops timing automatically after steel ball is through two photogate 5; And circulation demonstrates the time t that steel ball falls, and measures object drop h then, according to movement of falling object formula h=gt
2/ 2, just can calculate the gravity acceleration g value.Utilize this device can let the student that acceleration of gravity is had more intuitive impression, be convenient to understand related content, improve the quality of teaching.
Claims (5)
1. acceleration of gravity analyzer; It is characterized in that comprising base (1) and being fixed on the montant (2) on the base (1); Montant (2) vertically is evenly equipped with groove (3); Montant (2) top is provided with steel ball stationary installation (4), is provided with two photogate (5) at least along montant (2) vertical direction, and photogate (5) is electrically connected with timer (6).
2. acceleration of gravity analyzer according to claim 1 is characterized in that the electromagnetism suction ball device of said steel ball stationary installation (4) for being electrically connected with power supply.
3. acceleration of gravity analyzer according to claim 1 is characterized in that said montant (2) lower end is provided with the guard (7) that is used to catch steel ball.
4. according to each described acceleration of gravity analyzer of claim 1 to 3, it is characterized in that said base (1) is an A-frame.
5. acceleration of gravity analyzer according to claim 4 is characterized in that said montant (2) bottom is provided with spirit-leveling instrument (8), and base (1) is provided with horizontal adjustment bolt (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201896408U CN202523276U (en) | 2012-04-29 | 2012-04-29 | Gravity acceleration tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201896408U CN202523276U (en) | 2012-04-29 | 2012-04-29 | Gravity acceleration tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523276U true CN202523276U (en) | 2012-11-07 |
Family
ID=47106214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201896408U Expired - Fee Related CN202523276U (en) | 2012-04-29 | 2012-04-29 | Gravity acceleration tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202523276U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915020A (en) * | 2014-04-16 | 2014-07-09 | 陈涛 | Gravitational acceleration measuring instrument used for teaching |
| CN103985293A (en) * | 2012-12-03 | 2014-08-13 | 曾飞 | Mechanical device and method for compensating time for photoelectric timer |
| CN104504967A (en) * | 2015-01-05 | 2015-04-08 | 王振环 | Multi-functional kinetic study device |
| CN104504968A (en) * | 2015-01-05 | 2015-04-08 | 曾飞 | Gravity acceleration measuring method |
| CN106373464A (en) * | 2016-10-31 | 2017-02-01 | 滕德虎 | Free fall gravity acceleration measuring device |
| CN106652680A (en) * | 2017-03-09 | 2017-05-10 | 韩晨希 | Portable freefall experiment instrument |
| CN108777105A (en) * | 2018-05-28 | 2018-11-09 | 余杰 | A kind of physics teaching demonstration device of acceleration of gravity |
| CN109741663A (en) * | 2019-03-19 | 2019-05-10 | 王端晔 | Physics lesson free fall experimental device |
-
2012
- 2012-04-29 CN CN2012201896408U patent/CN202523276U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985293A (en) * | 2012-12-03 | 2014-08-13 | 曾飞 | Mechanical device and method for compensating time for photoelectric timer |
| CN103985293B (en) * | 2012-12-03 | 2016-08-24 | 国家电网公司 | Machinery and the method for time bias is done for phototimer |
| CN103915020B (en) * | 2014-04-16 | 2015-12-16 | 陈涛 | Teaching gravity accelerates one degree of survey meters |
| CN103915020A (en) * | 2014-04-16 | 2014-07-09 | 陈涛 | Gravitational acceleration measuring instrument used for teaching |
| CN104504968B (en) * | 2015-01-05 | 2019-02-05 | 孙美玲 | A method of measurement acceleration of gravity |
| CN104504968A (en) * | 2015-01-05 | 2015-04-08 | 曾飞 | Gravity acceleration measuring method |
| CN104504967A (en) * | 2015-01-05 | 2015-04-08 | 王振环 | Multi-functional kinetic study device |
| CN106373464A (en) * | 2016-10-31 | 2017-02-01 | 滕德虎 | Free fall gravity acceleration measuring device |
| CN106652680A (en) * | 2017-03-09 | 2017-05-10 | 韩晨希 | Portable freefall experiment instrument |
| CN108777105A (en) * | 2018-05-28 | 2018-11-09 | 余杰 | A kind of physics teaching demonstration device of acceleration of gravity |
| CN111081122A (en) * | 2018-05-28 | 2020-04-28 | 余杰 | Physical teaching demonstration device for gravitational acceleration and use method thereof |
| CN108777105B (en) * | 2018-05-28 | 2020-05-26 | 温州骐铭电子设备有限公司 | Physical teaching demonstration device for gravitational acceleration |
| CN111081122B (en) * | 2018-05-28 | 2021-12-14 | 湖州拓研科技发展有限公司 | Physical teaching demonstration device for gravitational acceleration and use method thereof |
| CN109741663A (en) * | 2019-03-19 | 2019-05-10 | 王端晔 | Physics lesson free fall experimental device |
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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: 20121107 Termination date: 20130429 |