CN201993952U - Gravitational acceleration measuring instrument - Google Patents
Gravitational acceleration measuring instrument Download PDFInfo
- Publication number
- CN201993952U CN201993952U CN2011200975662U CN201120097566U CN201993952U CN 201993952 U CN201993952 U CN 201993952U CN 2011200975662 U CN2011200975662 U CN 2011200975662U CN 201120097566 U CN201120097566 U CN 201120097566U CN 201993952 U CN201993952 U CN 201993952U
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- China
- Prior art keywords
- steel ball
- switch
- baffle plate
- timers
- timer
- 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.)
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Abstract
The utility model provides a gravitational acceleration measuring instrument. A supporting plate of the measuring instrument is strip-shaped; a concave rail is arranged on the supporting plate; a steel ball baffle plate is mounted above the concave rail; a steel ball is placed on the steel ball baffle plate in the concave rail; a steel ball baffle plate switch is further mounted on the supporting plate; starting switches of all timers are jointly connected to the steel ball baffle plate switch; graduations are marked on one side of the concave groove; the timers are mounted on the other side of the concave groove; at least three timers are provided; each timer is respectively connected with a stop switch; the stop switches are mounted on the inner side of the concave rail and distributed at regular intervals; and a timer zeroing switch is further mounted on the supporting plate and simultaneously connected with all the timers. When the measuring instrument is in use, the steel ball baffle plate switch is pressed down, the steel ball baffle plate is retracted, and the steel ball falls down; meanwhile, the starting switches of all the timers are turned on, and the timing begins; when the steel ball passes by the stop switches of the timers, the timers stop working, and the passing time of the steel ball is recorded; and through the recorded time and the distances fixed on a graduated scale, the numerical value of the acceleration can be accurately figured out.
Description
Technical field
The utility model belongs to the physical experiment apparatus technical field, relates to a kind of middle school student and measures the measuring instrument that acceleration of gravity is used.
Background technology
In the middle school physical experiment course, the measurement of acceleration of gravity mainly uses dotted timer to finish, this method is by measuring dot spacing on the paper tape from calculating acceleration, dotted timer need be equipped with power supply and paper tape is finished, after finishing experiment, to measure with the dot spacing of rule air exercise on paper tape, calculate again according to the result who measures.In actual mechanical process, the mounting or dismounting of dotted timer are very inconvenient, beat point on paper tape and usually can occur unintelligiblely, are easy to generate measuring error.
The utility model content
The purpose of this utility model has provided a kind of not only measuring instrument of convenient but also relatively accurate acceleration of gravity, and to overcome the shortcoming that dotted timer mounting or dismounting in the prior art are inconvenient, be easy to generate measuring error, this measuring instrument technical scheme is as follows:
A kind of measuring instrument of acceleration of gravity, its fagging is elongated, on fagging, have a recessed rail, the steel ball baffle plate is equipped with in the top of recessed rail, steel ball is placed on the interior steel ball baffle plate of recessed rail, steel ball baffle plate switch also is installed on fagging, the starting switch of each timer is connected on the steel ball baffle plate switch jointly, indicates scale in a side of groove, and opposite side is equipped with timer, timer is no less than three, each timer is connected with a shutdown switch respectively, and shutdown switch is installed in recessed rail inboard, and shutdown switch is equidistant arranges, timer also is installed on fagging returns zero switch, timer returns zero switch and is connected with all timers simultaneously; Upper end at fagging is equipped with hook, and the lower end is equipped with the steel ball string bag.
During use, press steel ball baffle plate switch, steel ball baffle plate retraction, steel ball falls, simultaneously, the starting switch of each timer is opened simultaneously, and timing begins, when steel ball process timer shutdown switch, timer stops, the elapsed time of steel ball is recorded, and passes through distance fixing on time of being write down and the rule, can calculate the numerical value of acceleration accurately.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Embodiment: as shown in Figure 1, a kind of measuring instrument of acceleration of gravity, the fagging 1 of this measuring instrument is elongated, on fagging 1, have a recessed rail 8, steel ball baffle plate 5 is equipped with in the top of recessed rail 8, steel ball 7 is placed on the steel ball baffle plate 5 in the recessed rail 8, steel ball baffle plate switch 4 also is installed on fagging 1, the starting switch of each timer is connected on the steel ball baffle plate switch 4 jointly, side at groove 8 indicates scale 9, opposite side is equipped with timer 2, and timer 2 is no less than three, and each timer is connected with a shutdown switch 10 respectively, shutdown switch 10 is installed in recessed rail 8 inboards, shutdown switch 10 equidistant arranging also are equipped with timer and return zero switch 3 on fagging, timer returns zero switch 3 and is connected with all timers 2 simultaneously; In the upper end of fagging 1 hook 6 is installed, the lower end is equipped with the steel ball string bag 11.
Claims (2)
1. the measuring instrument of acceleration of gravity, it is characterized in that: the fagging of this measuring instrument (1) is elongated, on fagging (1), have a recessed rail (8), steel ball baffle plate (5) is equipped with in the top of recessed rail (8), steel ball (7) is placed on the interior steel ball baffle plate (5) of recessed rail (8), steel ball baffle plate switch (4) also is installed on fagging (1), the starting switch of each timer is connected on the steel ball baffle plate switch (4) jointly, side at groove (8) indicates scale (9), opposite side is equipped with timer (2), timer (2) is no less than three, each timer is connected with a shutdown switch (10) respectively, and shutdown switch (10) is installed in recessed rail (8) inboard, equidistant the arranging of shutdown switch (10), timer also is installed on fagging returns zero switch (3), timer returns zero switch (3) and is connected with all timers (2) simultaneously.
2. the measuring instrument of acceleration of gravity as claimed in claim 1, it is characterized in that: in the upper end of fagging (1) hook (6) is installed, the lower end is equipped with the steel ball string bag (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200975662U CN201993952U (en) | 2011-03-26 | 2011-03-26 | Gravitational acceleration measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200975662U CN201993952U (en) | 2011-03-26 | 2011-03-26 | Gravitational acceleration measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201993952U true CN201993952U (en) | 2011-09-28 |
Family
ID=44670433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200975662U Expired - Fee Related CN201993952U (en) | 2011-03-26 | 2011-03-26 | Gravitational acceleration measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201993952U (en) |
Cited By (5)
| 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 |
| CN104020502A (en) * | 2014-06-16 | 2014-09-03 | 四川大学 | Method for measuring acceleration of gravity in sliding mode through guiding small ball in combination with three roll balls and three sliding grooves |
| CN108053730A (en) * | 2018-02-09 | 2018-05-18 | 亓迪 | A kind of high school physics speed experiments simulator |
| CN110782750A (en) * | 2019-11-22 | 2020-02-11 | 周宇航 | Physical free fall experiment simulation device |
-
2011
- 2011-03-26 CN CN2011200975662U patent/CN201993952U/en not_active Expired - Fee Related
Cited By (7)
| 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 |
| CN103915020A (en) * | 2014-04-16 | 2014-07-09 | 陈涛 | Gravitational acceleration measuring instrument used for teaching |
| CN103915020B (en) * | 2014-04-16 | 2015-12-16 | 陈涛 | Teaching gravity accelerates one degree of survey meters |
| CN104020502A (en) * | 2014-06-16 | 2014-09-03 | 四川大学 | Method for measuring acceleration of gravity in sliding mode through guiding small ball in combination with three roll balls and three sliding grooves |
| CN104020502B (en) * | 2014-06-16 | 2016-07-13 | 四川大学 | Three balls and three slide nest and coordinate leading bead slip measuring gravity acceleration method |
| CN108053730A (en) * | 2018-02-09 | 2018-05-18 | 亓迪 | A kind of high school physics speed experiments simulator |
| CN110782750A (en) * | 2019-11-22 | 2020-02-11 | 周宇航 | Physical free fall experiment simulation 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: 20110928 Termination date: 20140326 |