CN103136989A - Experiment instrument for relation between work and speed - Google Patents
Experiment instrument for relation between work and speed Download PDFInfo
- Publication number
- CN103136989A CN103136989A CN 201110381188 CN201110381188A CN103136989A CN 103136989 A CN103136989 A CN 103136989A CN 201110381188 CN201110381188 CN 201110381188 CN 201110381188 A CN201110381188 A CN 201110381188A CN 103136989 A CN103136989 A CN 103136989A
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- guide rail
- base plate
- rail base
- bungee
- speed
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Abstract
An experiment instrument for relation between work and speed is composed of a trolley running guide rail base plate, an elastic baffle, two movable bolts, rubber bands, a trolley and a ticker timer. The elastic baffle is installed at one end of the trolley running guide rail base plate, the movable bolts are installed on two sides at the center, the plurality of rubber bands are fixed on the movable bolts, two ends of each rubber band are fixed on the two movable bolts, the length of the rubber bands is adjustable, the ticker timer is installed at the other end of the trolley running guide rail base plate, and the trolley is placed on a guide rail of the guide rail base plate. The experiment instrument for relation between work and speed is simple and convenient to use, small in instrument consumption in experiment and good in teaching benefit. By means of the experiment instrument, experiments can success easily.
Description
Technical field
The present invention relates to a kind of instruments used for education, particularly relate to the instrument that the senior middle school physics teaching middle school student probe into " relation of merit and velocity variations ".
Technical background
Required 2 chapter 7 the 6th joints of high school physics textbook have arranged the student experimenting of " probing into the relation of merit and velocity variations ".Its method is to nail on two mouthfuls of nails in 1.2 meters of block lengths, the central both sides of rectangle plank of wide 12 centimetres, and an end of plank is loaded onto and got gauge ready, fixes bungee on nail.
Dolly ejects under the effect of bungee, slides along plank.Bungee work and the speed that dolly obtains can be measured by paper tape and dotted timer.Change the radical of bungee, and make every length identical, carry out several times and measure, can obtain the data of some groups of merits and speed.
But in field research (in student experimenting), owing to there is no special experimental apparatus, not only teachers ' teaching is inconvenient, and adopts above-mentioned method to do this experiment, has following larger problem, has a strong impact on experiment effect.The one, dolly at the volley easily and followed closely collision causes the experiment can not be successful; The 2nd, dolly can be gone out plank and get rid of badly, not only causes the instrument loss too large, and experiment can not continue to complete.The 3rd, some bungees are fastened on nail after identical its difficulty of length be that as inconsistent in some bungee length, experiment effect will be very poor greatly.The 4th, friction force considerable influence quality of experiments.
Summary of the invention
the instrument loss is large when solving on teaching material student experimenting, the problem that the experiment difficulty is large and experiment effect is poor, the present invention proposes a kind of experiment instrument of probing into merit and length velocity relation, by trolley travelling guide rail base plate, elastic baffle, two movable bolts, bungee, dolly, getting timing ready consists of, one end of trolley travelling guide rail base plate is equipped with elastic baffle, movable bolt is equipped with in both sides in central authorities, be fixed with some, bungee on movable bolt, every bungee two ends are separately fixed on two movable bolts, the other end of trolley travelling guide rail base plate is equipped with dotted timer, dolly is placed on the guide rail of guide rail base plate.
Beneficial effect: this experiment instrument of probing into merit and length velocity relation is easy to operate, and the loss of experiment Instrumental is little, tests easily successful, effective.
Description of drawings
Fig. 1 is instrument general assembly drawing of the present invention.
Embodiment
As shown in Figure 1, one end of vehicle guide base plate (1) is equipped with elastic baffle (2), the other end is equipped with dotted timer (4), movable bolt (3) respectively is equipped with in both sides in central authorities, the two ends of bungee (6) are separately fixed in the pickup groove D of movable bolt, dolly (5) is placed on the guide rail (7) of guide rail base plate (1), and dolly (5) ejects under the effect of bungee (6), slides along guide rail (7).Bungee (6) work and the speed that dolly (5) obtains can be measured by paper tape and dotted timer (4).Change the radical of bungee (6), and make every length identical, carry out several times and measure, can obtain the data of some groups of merits and speed.
Take bungee to the dolly work as ordinate, the speed that dolly obtains is horizontal ordinate, the merit W when testing for the first time makes W as unit---U curve, i.e. merit---rate curve.Analyze this curve, can learn that bungee is to the quantitative relationship of the speed of dolly work and dolly acquisition.The elastic baffle specification is 7 * 5 * 1cm.Movable bolt structure and size are as shown in Figure 1.Aluminum trolley travelling guide rail two rails are complementary with car wheel at a distance of 5 cm.Trolley travelling guide rail backplane specifications is 120 * 7 * 2cm.
Claims (1)
1. the experiment instrument of merit and length velocity relation, by trolley travelling guide rail base plate, elastic baffle, two movable bolts, bungee, dollies, get timing ready and consist of, one end of trolley travelling guide rail base plate is equipped with elastic baffle, movable bolt is equipped with in both sides in central authorities, be fixed with some, bungee on movable bolt, every bungee two ends are separately fixed on two movable bolts, and the other end of trolley travelling guide rail base plate is equipped with dotted timer, and dolly is placed on the guide rail of guide rail base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110381188 CN103136989A (en) | 2011-11-26 | 2011-11-26 | Experiment instrument for relation between work and speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110381188 CN103136989A (en) | 2011-11-26 | 2011-11-26 | Experiment instrument for relation between work and speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103136989A true CN103136989A (en) | 2013-06-05 |
Family
ID=48496757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110381188 Pending CN103136989A (en) | 2011-11-26 | 2011-11-26 | Experiment instrument for relation between work and speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103136989A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370200A (en) * | 2016-10-11 | 2017-02-01 | 张远程 | Motion parameter measurement device of car |
| CN109326184A (en) * | 2018-11-15 | 2019-02-12 | 高晓楠 | A kind of mechanics synthetic experiment measuring device |
-
2011
- 2011-11-26 CN CN 201110381188 patent/CN103136989A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370200A (en) * | 2016-10-11 | 2017-02-01 | 张远程 | Motion parameter measurement device of car |
| CN106370200B (en) * | 2016-10-11 | 2023-08-15 | 南京南华航空产业有限公司 | Motion parameter measuring device of vehicle |
| CN109326184A (en) * | 2018-11-15 | 2019-02-12 | 高晓楠 | A kind of mechanics synthetic experiment measuring device |
| CN109326184B (en) * | 2018-11-15 | 2023-10-03 | 高晓楠 | Comprehensive experiment measuring device for mechanics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |