CN200986596Y - Gravitational acceleration measuring apparatus - Google Patents
Gravitational acceleration measuring apparatus Download PDFInfo
- Publication number
- CN200986596Y CN200986596Y CNU2005200521005U CN200520052100U CN200986596Y CN 200986596 Y CN200986596 Y CN 200986596Y CN U2005200521005 U CNU2005200521005 U CN U2005200521005U CN 200520052100 U CN200520052100 U CN 200520052100U CN 200986596 Y CN200986596 Y CN 200986596Y
- Authority
- CN
- China
- Prior art keywords
- weight block
- bar shaped
- strip heavy
- shaped weight
- heavy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a gravitational acceleration measuring instrument applied to the gravitational acceleration measuring in a physics experiment including a base, a support frame, an object clamping device, a strip heavy-weight block, a photoelectric door support, a photoelectric door, an object carrying hopper, a releasing button for the strip heavy-weight block, a horizontal regulating screw, a gradienter, a digital millisecond meter, a crown block, a spring fixing frame, a spring, a hanging bolt for the strip heavy-weight block, a rope, a hanging hole for the strip heavy-weight block, and a middle window of the strip heavy-weight block. The strip heavy-weight block is arranged on the hanging bolt of the object clamping device, and the free falling of the strip heavy-weight block is controlled by the releasing button. The gravitational acceleration is measured by the distance and time of the free falling of the strip heavy-weight block. The measuring distance that the free falling of the strip heavy-weight block passing through the photoelectric door is decided by the length between the lower side of the hanging hole of the strip heavy-weight block and the lower end of the strip heavy-weight block as well as the length between the lower side of the middle window of the strip heavy-weight block and the lower end of the strip heavy-weight block. The free falling time of the strip heavy-weight block passing through the photoelectric door is The measuring time that the free falling of the strip heavy-weight block passing through the photoelectric door is read out by the digital millisecond meter. The measuring instrument has the advantages of reasonable structure, easy operation, good repeatability and small error.
Description
Affiliated technical field
The utility model relates to a kind of acceleration of gravity measuring instrument, is to be used for the experimental apparatus that acceleration of gravity is measured in Physical Experiment.
Background technology
At present, the experimental apparatus of measuring acceleration of gravity has single pendulum method and freely falling body method, in the single pendulum method, require to ignore the quality of fine rule and bead is regarded as a particle, and the amplitude of oscillation of bead can not be above 5 °, so measuring error is bigger, in the freely falling body method, generally be with bead as freely falling body, but bead is when the photogate, often not the barycenter shading timing of bead, so have bigger error yet.
Summary of the invention
Use bead as freely falling body in the acceleration of gravity experimental apparatus in order to overcome existing the measurement, the deficiency that measuring error is big, the utility model provides a kind of acceleration of gravity measuring instrument, this acceleration of gravity measuring instrument uses the bar shaped weight block as freely falling body, the bar shaped weight block is installed on the extension bolt of folder thing device, by the elastic force of spring, the pulling force effect of rope and the free-falling that release knob is controlled the bar shaped weight block.This measuring instrument is rational in infrastructure, globality and good reproducibility, and easy to operate, measuring error is little.
The technical scheme that its technical matters that solves the utility model adopts is: bracing frame (2) lower end is fixed on the base (1), folder thing device (3) is equipped with in the upper end, bar shaped weight block (4) hangs on the folder thing device (3), photogate support (5) is equipped with in the centre of bracing frame (2), photogate (6) is installed on the photogate support (5), photogate (6) is connected with digital millisecond counter (11) by cable, accepting articles (7) is housed on the base (1), bar shaped weight block release knob (8), horizontal adjustment screw (9) and level meter (10), the left end of spring (14) is fixed on the spring anchorage bracket (13), the right-hand member of spring (14) is connected with the left end that the bar shaped weight block is hung bolt (15), the upper end of rope (16) is fixed on the bar shaped weight block and hangs on the left end of bolt (15), after rope (16) is walked around fixed pulley (12), its lower end is fixed on the bar shaped weight block release knob (8), the bar shaped weight block hang bolt (15) at the elastic force of spring (14) and rope (16) but move left and right under the effect of pulling force, bar shaped weight block (4) upper end has hanging hole (17) and the middle window (18) that can hide, the distance L of hanging hole (17) bottom margin bar shaped weight block (4) lower end of having
1=30cM, the distance L of window (18) bottom margin bar shaped weight block (4) lower end
2=15cM.
The beneficial effects of the utility model are: can measure acceleration of gravity easily, and rational in infrastructure, good integrity, easy to operate, good reproducibility, measuring error is little.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of utility model.
Fig. 2 is the structural representation of folder thing device.
Fig. 3 is the structural representation of bar shaped weight block.
1. bases among the figure, 2. bracing frame, 3. folder thing device, 4. bar shaped weight block, 5. photogate support, 6. photogate, 7. accepting articles, 8. bar shaped weight block release knob, 9. horizontal adjustment screw, 10. horizontal steam bubble, 11. digital millisecond counters, 12. fixed pulleys, 13. spring anchorage bracket, 14. springs, 15. bar shaped weight block are hung bolt, 16. rope, 17. bar shaped weight block hanging holes, 18. windows.
Embodiment
In Fig. 1, bracing frame (2) lower end is fixed on the base (1), folder thing device (3) is equipped with in the upper end, bar shaped weight block (4) hangs on the folder thing device (3), photogate support (5) is equipped with in the centre of bracing frame (2), photogate (6) is installed on the photogate support (5), and photogate (6) is connected with digital millisecond counter (11) by cable, and accepting articles (7), bar shaped weight block release knob (8), horizontal adjustment screw (9) and level meter (10) are housed on the base (1).
In Fig. 2, the left end of spring (14) is fixed on the spring anchorage bracket (13), the right-hand member of spring (14) is connected with the left end that the bar shaped weight block is hung bolt (15), the upper end of rope (16) is fixed on the bar shaped weight block and hangs on the left end of bolt (15), after rope (16) is walked around fixed pulley (12), its lower end is fixed on the bar shaped weight block release knob (8), the bar shaped weight block hang bolt (15) at the elastic force of spring (14) and rope (16) but move left and right under the effect of pulling force.
In Fig. 3, bar shaped weight block (4) upper end has hanging hole (17) and the middle window (18) that can hide, the distance L of hanging hole (17) bottom margin bar shaped weight block (4) lower end of having
1=30cM, the distance L of window (18) bottom margin bar shaped weight block (4) lower end
2=15cM.
Close the middle window (18) of bar shaped weight block (4), open bar shaped weight block release knob (8), bar shaped weight block (4) is installed on the extension bolt (15), regulates the position of photogate support (5), make center about 1 centimeters under bar shaped weight block (4) of photogate (6); Regulate the horizontal adjustment screw (9) on the base (1), when the horizontal steam bubble of (10) on the level meter was in the centre position of level meter (10), bracing frame (2) just was in vertical state; Connect digital millisecond counter (11), the plug of the photogate of having pegged graft (6) is pressed the function key of digital millisecond counter (11), selects S
1, make digital millisecond counter (11) be in the record shading state that clocks; Open bar shaped weight block release knob (8), bar shaped weight block (4) free-falling is pressed " stopping " key of digital millisecond counter (11) in accepting articles (7), thumbs the shading time for the first time, is bar shaped weight block (4) free-falling by photogate (6) L
1The time t of distance
1From accepting articles (7), take out bar shaped weight block (4), and open middle window (18), bar shaped weight block (4) is reinstalled in hangs on the bolt (15), repeat said process, measure bar shaped weight block (4) free-falling by photogate (6) L
2The time t of distance
2By
Formula obtain gravity acceleration g.
Claims (2)
1, a kind of acceleration of gravity measuring instrument, bracing frame (2) lower end is fixed on the base (1), folder thing device (3) is equipped with in the upper end, photogate support (5) is equipped with in the centre of bracing frame (2), photogate (6) is installed on the photogate support (5), photogate (6) is connected with digital millisecond counter (11) by cable, accepting articles (7) is housed on the base (1), bar shaped weight block release knob (8), horizontal adjustment screw (9) and level meter (10), spring (14) left end of folder thing device (3) is fixed on the spring anchorage bracket (13), right-hand member is fixed on the bar shaped weight block and hangs on bolt (15) left end, acceleration of gravity was measured by the distance and the time of bar shaped weight block (4) free-falling, it is characterized in that: bar shaped weight block (4) is installed on the extension bolt (15) of folder thing device (3), and the left end that the bar shaped weight block is hung bolt (15) is connected with release knob (8) by the rope of walking around fixed pulley (12) (16).
2, a kind of acceleration of gravity measuring instrument according to claim 1 is characterized in that: bar shaped weight block (4) upper end has hanging hole (17) and the middle window (18) that can hide, the distance L of hanging hole (17) bottom margin bar shaped weight block (4) lower end of having
1=30cM, the distance L of window (18) bottom margin bar shaped weight block (4) lower end
2=15cM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200521005U CN200986596Y (en) | 2005-10-10 | 2005-10-10 | Gravitational acceleration measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200521005U CN200986596Y (en) | 2005-10-10 | 2005-10-10 | Gravitational acceleration measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200986596Y true CN200986596Y (en) | 2007-12-05 |
Family
ID=38916056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200521005U Expired - Fee Related CN200986596Y (en) | 2005-10-10 | 2005-10-10 | Gravitational acceleration measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200986596Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460851C (en) * | 2005-12-07 | 2009-02-11 | 上海浩顺科技有限公司 | 1-D impaction strength testing device |
| CN101592536B (en) * | 2008-05-30 | 2012-09-26 | 鸿富锦精密工业（深圳）有限公司 | Gravity sensor and portable electronic equipment applying same |
| CN104966441A (en) * | 2015-07-27 | 2015-10-07 | 广东东软学院 | Integrated simple pendulum instrument |
| CN113533116A (en) * | 2021-06-10 | 2021-10-22 | 国网江苏省电力有限公司电力科学研究院 | Device and method for measuring mass change of adsorbent |
-
2005
- 2005-10-10 CN CNU2005200521005U patent/CN200986596Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460851C (en) * | 2005-12-07 | 2009-02-11 | 上海浩顺科技有限公司 | 1-D impaction strength testing device |
| CN101592536B (en) * | 2008-05-30 | 2012-09-26 | 鸿富锦精密工业（深圳）有限公司 | Gravity sensor and portable electronic equipment applying same |
| CN104966441A (en) * | 2015-07-27 | 2015-10-07 | 广东东软学院 | Integrated simple pendulum instrument |
| CN113533116A (en) * | 2021-06-10 | 2021-10-22 | 国网江苏省电力有限公司电力科学研究院 | Device and method for measuring mass change of adsorbent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200986596Y (en) | Gravitational acceleration measuring apparatus | |
| CN202331996U (en) | Measuring device of spring stiffness coefficient | |
| CN206038119U (en) | Laser weight -measuring device based on optical lever | |
| CN210091501U (en) | Demonstration device for demonstrating influence of slopes with different angles on tension | |
| CN215653742U (en) | Intelligent military training evaluation system | |
| CN210324784U (en) | High school physics lever teaching aid | |
| CN212256674U (en) | Multifunctional simple pendulum experimental device | |
| CN209028921U (en) | A kind of resonance demonstration instrument device | |
| CN211578186U (en) | Physical measurement tensiometer equipment | |
| CN209133030U (en) | A kind of device that can measure arbitrary shaped body inertia mass | |
| CN207528333U (en) | A kind of material measuring device | |
| JP2002228766A (en) | Rainfall intensity detector | |
| CN211594691U (en) | Elevator wire rope tensile force measuring device | |
| CN211506883U (en) | Physical experiment device | |
| CN209783733U (en) | test bench for measuring natural frequency of strings of Chinese zither plate | |
| CN205094024U (en) | Photo holder frame couple of adjustable balance | |
| CN210803609U (en) | Direct current fills electric pile check out test set | |
| CN212460918U (en) | Physics teaching experiment auxiliary device | |
| CN209199424U (en) | A kind of friction testing device | |
| CN213481451U (en) | Energy-saving monitoring devices of hydraulic engineering | |
| CN213633122U (en) | Testing arrangement of fabrics compliance | |
| CN215182634U (en) | Experimental device for quantitatively exploring forced vibration and resonance phenomena | |
| CN206421710U (en) | The synthesis of teaching firmly is with decomposing physics facility | |
| CN210243367U (en) | Draw and turn round integration testing arrangement | |
| CN220568395U (en) | Vertical load test device for whole door frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |