Inclined plane experiment device for physics teaching
By designing a slope experimental device including release switch, stop switch and timer, the error problem caused by manual operation is solved, automatic timing and error reduction are achieved, and students are facilitated to explore the movement laws of slope.
Patent Information
- Application Number
- CN202322908709.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-30
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2033-10-30
AI Technical Summary
In the inclined experiment of middle school physics teaching, manually releasing the cart and manually pressing the stopwatch to clock, it is easy to generate artificial errors, affecting the subsequent calculation of physical quantities.
A slope experimental device is designed, including a release switch, a stop switch and a timer, to measure the movement of the car through a hook and a spring dynamometer to reduce human operation errors.
The device can automatically start and stop timing, reduce human error, and facilitate students to explore the law of inclined surface motion.
Smart Images
Figure CN222690253U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of teaching equipment, in particular to an inclined plane experimental device used for physics teaching. Background Art
[0002] In the inclined plane experiment of middle school physics teaching, it is necessary to measure the time it takes for a car to slide from the top of the inclined plane to the bottom in order to calculate the average speed of the car. In actual operation, it is necessary to manually release the car and press the stopwatch to start the time. When the car reaches the bottom, it is also necessary to manually press the stopwatch again to stop the time. This is prone to human errors and affects the calculation of subsequent physical quantities. A device is needed to reduce the impact of human operation errors. Summary of the invention
[0003] The utility model provides an inclined plane experimental device for physics teaching in order to overcome the deficiencies of the prior art.
[0004] In order to achieve the above-mentioned purpose, an inclined plane experiment device for physics teaching is designed, including a base, characterized in that: the top of the base is connected to the inclined panel, a release switch is provided on the upper side of the inclined panel, a hook is fixedly connected to one side of the release switch, the hook hooks the tail of the trolley, the opening of the hook faces upward, a stop switch is provided on the lower side above the inclined panel, a timer is fixed on one side of the base, and the release switch and the stop switch are connected to the timer through wires.
[0005] The hook hooks the spring dynamometer, and the spring dynamometer hooks the tail of the trolley.
[0006] A counterweight is arranged above the trolley.
[0007] The release switch and the stop switch are connected in parallel with the START / STOP switch of the timer through wires.
[0008] The base is rotationally connected to the inclined panel, and the lower part of the inclined panel is supported by a telescopic rod, which includes a sleeve and a screw. The lower end of the sleeve is rotationally connected to the base, and the upper end of the sleeve is provided with a nut, which is screwed with the screw. One end of the screw is located in the sleeve, and the other end of the screw is rotationally connected to the inclined panel.
[0009] A rotating sleeve is provided on the outside of the nut, the bottom of the rotating sleeve is sleeved on the outside of the top of the sleeve, the bottom of the rotating sleeve is provided with an inward flange, the top of the sleeve is provided with an outward flange, the flange on the top of the sleeve is located between the nut and the bottom of the rotating sleeve, and the rotating sleeve and the nut are fixed by screws.
[0010] Compared with the prior art, the utility model provides a release switch and a stop switch on the inclined plane, connects the switch to a timer, and connects a hook on one side of the release switch. The timing can be started when the release switch is pressed to release the trolley, and the trolley stops automatically when it reaches the bottom. This can reduce the influence of human operation errors and facilitate students' exploration of the movement laws of the inclined plane. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 For the utility model Figure 1 .
[0012] Figure 2 This is a connection diagram of the release switch, stop switch and timer.
[0013] Figure 3 For the utility model Figure 2 .
[0014] Figure 4 It is a structural schematic diagram of the telescopic rod.
[0015] See also Figure 1-Figure 4 , among which, 1 is the base, 2 is the inclined panel, 3 is the telescopic rod, 3-1 is the sleeve, 3-2 is the nut, 3-3 is the screw, 3-4 is the rotating sleeve, 3-5 is the screw, 4 is the release switch, 4-1 is the hook, 5 is the trolley, 5-1 is the counterweight, 6 is the stop switch, 7 is the timer, 7-1 is the START / STOP switch, and 8 is the spring dynamometer. DETAILED DESCRIPTION
[0016] The utility model is further described below with reference to the accompanying drawings.
[0017] like Figure 1-Figure 4 As shown, the upper part of the base 1 is connected to the inclined panel 2, and a release switch 4 is provided on the upper side of the inclined panel 2. A hook 4-1 is fixedly connected to one side of the release switch 4. The hook 4-1 hooks the tail of the trolley 5, and the opening of the hook 4-1 faces upward. A stop switch 6 is provided on the lower side of the upper part of the inclined panel 2. A timer 7 is fixed to one side of the base 1. The release switch 4 and the stop switch 6 are connected to the timer 7 through a wire. Figure 1 As shown, the release switch 4 is pressed, the hook 4-1 moves downward and disengages from the trolley 5, the trolley 5 starts to move freely downward, the timer 7 starts timing, and when the trolley 5 reaches the bottom of the inclined panel 2, it hits the stop switch 6, and the timer 7 stops timing.
[0018] The hook 4-1 hooks the spring dynamometer 8, and the spring dynamometer 8 hooks the tail of the trolley 5. Figure 3 As shown, the spring dynamometer 8 can be used to measure the component force along the inclined surface direction of the trolley 5.
[0019] A counterweight 5-1 is provided above the trolley 5. By providing different counterweights 5-1, the weight of the trolley 5 can be changed, and the relationship between the mass of the trolley 5 and the inclined plane motion time can be explored.
[0020] The release switch 4 and the stop switch 6 are connected in parallel with the START / STOP switch 7-1 of the timer 7 through wires. The START / STOP button of a common stopwatch is pressed once to start timing, and pressed again to stop timing; Figure 2 As shown, the release switch 4 and the stop switch 6 are connected in parallel with the START / STOP button 7-1 of the timer 7. Pressing the release switch 4 can make the two sides of the START / STOP button 7-1 conductive, and the timer 7 starts timing when the trolley 5 is released. When the trolley 5 slides to the bottom of the inclined panel 2, it hits and presses the stop switch 6, and the two sides of the START / STOP button 7-1 are conductive again, stopping the timing.
[0021] The base 1 is rotatably connected to the inclined panel 2. The inclined panel 2 is supported by a telescopic rod 3 below. The telescopic rod 3 includes a sleeve 3-1 and a screw 3-3. The lower end of the sleeve 3-1 is rotatably connected to the base 1. The upper end of the sleeve 3-1 is provided with a nut 3-2. The nut 3-2 is screwed with the screw 3-3. One end of the screw 3-3 is located in the sleeve 3-1, and the other end of the screw 3-3 is rotatably connected to the inclined panel 2. The base 1, the inclined panel 2, and the telescopic rod 3 are rotatably connected to each other. The inclination angle of the inclined panel 2 can be adjusted by extending and retracting the telescopic rod 3, and no interference occurs when the inclined panel 2 rotates. The telescopic rod 3 can be extended and retracted by rotating the nut 3-2 and the screw 3-3.
[0022] A rotating sleeve 3-4 is provided on the outside of the nut 3-2. The bottom of the rotating sleeve 3-4 is sleeved on the outside of the top of the sleeve 3-1. The bottom of the rotating sleeve 3-4 is provided with an inward flange. The top of the sleeve 3-1 is provided with an outward flange. The flange at the top of the sleeve 3-1 is located between the nut 3-2 and the bottom of the rotating sleeve 3-4. The rotating sleeve 3-4 and the nut 3-2 are fixed by screws 3-5. Figure 4 As shown, the flange of the rotating sleeve 3-4 and the flange of the sleeve 3-1 are stuck to each other, so that the position of the rotating sleeve 3-4 is limited above the sleeve 3-1 when rotating. Manually rotating the rotating sleeve 3-4 drives the nut 3-2 to rotate, so that the screw 3-3 and the sleeve 3-1 can be extended and retracted.
[0023] When the utility model is used, a spring dynamometer 8 is hung on the hook 4-1 of the release switch 4, and the spring dynamometer 8 hooks the tail of the trolley 5, so that the component force of gravity exerted on the trolley 5 can be measured. The tail of the trolley 5 is hung on the hook 4-1 of the release switch 4, and the release switch 4 is pressed. The timing starts when the trolley 5 is released, and the timing stops when the trolley 5 hits the stop switch 6, so that the sliding time of the trolley 5 can be measured. By changing the counterweight of the trolley 5 to conduct experiments, the same result can be obtained that the trolleys 5 of different weights slide freely downward on the same inclined plane. A variety of experiments can be carried out, which is convenient for students to explore the laws of inclined plane motion.
Claims
1. An inclined plane experimental device for physics teaching, comprising a base (1), characterized in that: The upper part of the base (1) is connected to the inclined panel (2), a release switch (4) is provided on the upper side of the inclined panel (2), a hook (4-1) is fixedly connected to one side of the release switch (4), the hook (4-1) hooks the tail of the trolley (5), the opening of the hook (4-1) faces upward, a stop switch (6) is provided on the lower side above the inclined panel (2), a timer (7) is fixed to one side of the base (1), the release switch (4) and the stop switch (6) are connected to the timer (7) through a wire; a counterweight (5-1) is provided on the upper side of the trolley (5); the release switch (4) and the stop switch (6) are connected in parallel to a START / STOP switch (7-1) of the timer (7) through a wire.
2. The inclined plane experimental device for physics teaching according to claim 1, characterized in that: The hook (4-1) hooks the spring dynamometer (8), and the spring dynamometer (8) hooks the tail of the trolley (5).