CN204166148U - A kind of device measuring acceleration of gravity - Google Patents
A kind of device measuring acceleration of gravity Download PDFInfo
- Publication number
- CN204166148U CN204166148U CN201420570027.XU CN201420570027U CN204166148U CN 204166148 U CN204166148 U CN 204166148U CN 201420570027 U CN201420570027 U CN 201420570027U CN 204166148 U CN204166148 U CN 204166148U
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- Prior art keywords
- acceleration
- gravity
- motion
- motion carrier
- container
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Abstract
The utility model discloses a kind of device measuring acceleration of gravity, it comprises a container and a motion carrier, and wherein, described container is fixed on described motion carrier, and accommodates liquid in described container; Described motion carrier can do even acceleration or uniformly retarded motion, and the acceleration of this even acceleration or uniformly retarded motion can be obtained.Device of the present utility model can also comprise the device that the constant force of force application apparatus and carrying out for the acceleration of described motion carrier apply to(for) described motion carrier is measured.The device of measurement acceleration of gravity of the present utility model has that structure is simple, easy and simple to handle, measuring accuracy is high, measures the advantage that demonstration is vivid.
Description
Technical field
The utility model relates to acceleration of gravity field of measuring technique, is specifically related to a kind of device measuring acceleration of gravity.
Background technology
Testing acceleration of gravity in prior art generally uses single pendulum to test, and device comprises fine rule, prill with holes, iron clamp, iron stand and stopwatch; Make a call to a knot larger than the hole on prill in one end of fine rule, fine rule is made a single pendulum through the hole on prill, this single pendulum is fixed on iron stand by iron clamp, iron stand is placed on a limit and makes iron clamp stretch out desktop, make single pendulum freely sagging; The diameter using vernier caliper measurement to go out bead is designated as d; Meter ruler measurement prill suspension point is used to be designated as 1 to the distance of bead upper end; Prill is offset 5 ~ 8 degree, its perpendicular bisector to freely swing in perpendicular, and use stopwatch record prill to complete the time T entirely vibrated for 30 ~ 50 times; Obtain prill and entirely vibrate t=T/c averaging time used at every turn; The wherein number of times of full vibration that does for prill in T time of c; According to formula g=4 π
2l/t
2try to achieve acceleration of gravity, wherein L=d/2+1.
When using device to test acceleration of gravity of the prior art, a people is needed to see the number of times that table one personal record single pendulum vibrates entirely, operation more complicated, and calculating the full vibration number of single pendulum and utilizing single pendulum timing easily to go wrong, often need repeatedly repetitive operation once to measure successfully, need to spend the long time when therefore using acceleration of gravity measurement mechanism of the prior art to measure acceleration of gravity.
Utility model content
(1) technical matters that will solve
To be solved in the utility model is the not good and longer shortcoming consuming time of the device complicated operation of existing measurement acceleration of gravity, degree of accuracy.
(2) technical scheme
The device of measurement acceleration of gravity of the present utility model, comprise a container and a motion carrier, wherein, described container is fixed on described motion carrier, and accommodates liquid in described container; Described motion carrier can do even acceleration or uniformly retarded motion, and the acceleration of this even acceleration or uniformly retarded motion can be obtained.
According to embodiment of the present utility model, this described wall of a container is provided with altitude scale.
According to embodiment of the present utility model, described telecontrol equipment can do even acceleration or uniformly retarded motion with the acceleration preset.
According to embodiment of the present utility model, also comprise force application apparatus, the assembly that this force application apparatus can be formed described container and motion carrier applies a constant power.
According to embodiment of the present utility model, also comprise acceleration measurement device, it is for measuring the acceleration of described motion carrier.
According to embodiment of the present utility model, described acceleration measurement device is gyroscope.
According to embodiment of the present utility model, described acceleration measurement device is be arranged in the detecting device on the motion path of described motion carrier at a certain distance.
According to embodiment of the present utility model, the viscosity number of described liquid is at normal temperatures lower than 20 centipoises.
According to embodiment of the present utility model, described liquid is water.
(3) beneficial effect
The device of measurement acceleration of gravity of the present utility model has that structure is simple, easy and simple to handle, measuring accuracy is high, measures the advantage that demonstration is vivid.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device of measurement acceleration of gravity of the present utility model;
Fig. 2 is the schematic diagram of the device of measurement acceleration of gravity of the present utility model, its display be the stressing conditions of a point on liquid level.
Embodiment
For solving the problems of the technologies described above, the utility model proposes a kind of device of measurement acceleration of gravity newly, it comprises a container and a motion carrier, wherein, described container is fixed on described motion carrier, and accommodates liquid in described container, and this wall of a container is provided with altitude scale; Described motion carrier can do even acceleration or uniformly retarded motion.
Fig. 1 is the structural representation of the device of measurement acceleration of gravity of the present utility model.As shown in Figure 1, measurement mechanism of the present utility model comprises a container 1 and a motion carrier 2, and container 1 is fixed on motion carrier 2, and wherein accommodates liquid 3.
The shape of described container 1 is unrestricted in the utility model, can be cup-shaped, cylindrical shape, prismatic etc., and its material is preferably transparent or translucent, to observe liquid level from outside.Chamber wall is preferably mark and has altitude scale, to record the position at liquid level place.This altitude scale is preferably the both sides, front and back of the direction of motion be positioned at less along described motion carrier 2, so that observe the liquid level of both sides before and after this.
Described motion carrier 2 can do equal accelerated motion or all retarded motions under external force.Preferably, the force application apparatus applying described external force can apply a constant power to this motion carrier 2.This power can be mechanical force, electric field force, magnetic field force etc.Such as, force application apparatus can be apply the device in a constant magnetic field on the movement locus of this motion carrier 2, meanwhile, this motion carrier 2 to small part be magnet.
This motion carrier 2 be preferably placed on there is constant friction coefficient contact plane on so that its friction force of being subject in motion process keeps constant.Want motion carrier 2 namely can move time and its plane of placing produce sliding friction, also can produce rolling friction.Such as, as shown in Figure 1, steamboat is housed to produce rolling friction with contact plane bottom it.
Thus, when force application apparatus (not shown in figure 1) applies a constant power to motion carrier, container 1 is done equal accelerated motion in company with the direction of motion carrier 2 towards force or all slows down dynamic (depending on that the initial velocity direction of motion carrier 2 is identical with force direction or contrary), thus, the liquid level of liquid in the container 1 can produce an inclination alpha.Below, we come this inclination angle of analysis and utilization to measure the principle of acceleration of gravity.
Fig. 2 is the schematic diagram of the device of measurement acceleration of gravity of the present utility model, its display be the stressing conditions of a point on liquid level, the liquid level of described liquid 3 is got a micro volume unit (liquid infinitesimal), if its quality is m, suffered gravity is mg, simultaneously, it is also subject to the holding power N that liquid below gives, the direction of holding power N is perpendicular to liquid level direction, the making a concerted effort to be of holding power N and these two power of gravity mg make this liquid infinitesimal produce making a concerted effort of acceleration a, mgtg α=ma can be obtained thus.So g=a/tg α.Meanwhile, according to Fig. 1, the business of tg α liquid level forward and backward height difference Δ h and liquid level longitudinal separation D again, i.e. tg α=Δ h/D.Before substituting into, formula can obtain g=a Δ h/D.
Obtain because liquid level forward and backward height difference Δ h and acceleration a all can facilitate to obtain, liquid level longitudinal separation D is generally fixed value, as long as therefore motion carrier 2 is made one or many and all accelerated or all retarded motions, can obtain the value of acceleration of gravity.
Certainly, also can carry out directly to record the size of angle [alpha] by other means, such as, be obtained the image of liquid level by real-time image record, then by measuring the size obtaining this angle.
Described even acceleration or the acceleration a of uniformly retarded motion should preset or can be accurately measured and obtain.If design in advance, then described force application apparatus can accurately regulate the constant power that described container and motion carrier apply, the such as intensity in regulating constant degree magnetic field, then the size of magnetic field intensity and the size of acceleration entered and calibrated, predetermined acceleration size can be regulated according to the magnetic field intensity power of setting.
If described acceleration a measures and obtains in experimentation, then separated by a distance on the movement locus of motion carrier 2 two detecting devices can be set, be respectively used to detect the time of this motion carrier 2 by these two detecting devices, thus cross the mistiming t calculating two time points, according to formula a=2s/t
2can try to achieve acceleration little, wherein s is the distance between two detecting devices.
Certainly, if the size of the constant power of applying accurately can not be designed, or during the gross mass of inconvenient measuring vessel and motion carrier, described motion carrier 2 can be measured by an acceleration measurement device and all accelerate or the acceleration of all retarded motions.Described acceleration measurement device is such as mounted in the gyroscope on motion carrier.
In addition, it is little that the viscosity of the liquid held in described container should be tried one's best, in order to avoid liquid reaches the overlong time of balance after change to even acceleration/even deceleration regime from stationary state.Usually, viscosity can be selected under normal temperature lower than the liquid of 20 centipoises, water is a kind of preferably to select.
Compared to the prior art of direct acceleration measurement, the gap tilt effect that the utility model is occurred when accelerating by liquid, by the acceleration analysis of the acceleration analysis transformationization horizontal direction of vertical direction, this is conducive to the difficulty improving measurement mechanism framework, thus improves the precision measured.Meanwhile, measuring method of the present utility model is simple, effectively, can improve the effect measured.Meanwhile, measuring process of the present utility model is lively, vivid, can be applied to the experiment appliance in teaching, scientific research, improves vividness and the quality of instruction of teaching.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. measure a device for acceleration of gravity, comprise a container and a motion carrier, wherein,
Described container is fixed on described motion carrier, and accommodates liquid in described container;
Described motion carrier can do even acceleration or uniformly retarded motion, and the acceleration of this even acceleration or uniformly retarded motion can be obtained.
2. the device measuring acceleration of gravity as claimed in claim 1, it is characterized in that, this described wall of a container is provided with altitude scale.
3. the device measuring acceleration of gravity as claimed in claim 1, it is characterized in that, described telecontrol equipment can do even acceleration or uniformly retarded motion with the acceleration preset.
4. the device measuring acceleration of gravity as claimed in claim 3, it is characterized in that, also comprise force application apparatus, the assembly that this force application apparatus can be formed described container and motion carrier applies a constant power.
5. the device of the measurement acceleration of gravity according to any one of Claims 1 to 4, is characterized in that, also comprise acceleration measurement device, and it is for measuring the acceleration of described motion carrier.
6. the device measuring acceleration of gravity as claimed in claim 5, it is characterized in that, described acceleration measurement device is gyroscope.
7. the device measuring acceleration of gravity as claimed in claim 5, it is characterized in that, described acceleration measurement device is be arranged in the detecting device on the motion path of described motion carrier at a certain distance.
8. the device of the measurement acceleration of gravity according to any one of Claims 1 to 4, is characterized in that, the viscosity number of described liquid is at normal temperatures lower than 20 centipoises.
9. the device of the measurement acceleration of gravity according to any one of Claims 1 to 4, is characterized in that, described liquid is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570027.XU CN204166148U (en) | 2014-09-30 | 2014-09-30 | A kind of device measuring acceleration of gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570027.XU CN204166148U (en) | 2014-09-30 | 2014-09-30 | A kind of device measuring acceleration of gravity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204166148U true CN204166148U (en) | 2015-02-18 |
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ID=52539824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420570027.XU Expired - Fee Related CN204166148U (en) | 2014-09-30 | 2014-09-30 | A kind of device measuring acceleration of gravity |
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| Country | Link |
|---|---|
| CN (1) | CN204166148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110930834A (en) * | 2019-11-25 | 2020-03-27 | 齐齐哈尔大学 | Experimental device and method for obtaining liquid level height difference of uniform accelerated motion |
-
2014
- 2014-09-30 CN CN201420570027.XU patent/CN204166148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110930834A (en) * | 2019-11-25 | 2020-03-27 | 齐齐哈尔大学 | Experimental device and method for obtaining liquid level height difference of uniform accelerated motion |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |