CN211787773U - Friction coefficient experimental device for high school physics - Google Patents
Friction coefficient experimental device for high school physics Download PDFInfo
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- CN211787773U CN211787773U CN201922299892.0U CN201922299892U CN211787773U CN 211787773 U CN211787773 U CN 211787773U CN 201922299892 U CN201922299892 U CN 201922299892U CN 211787773 U CN211787773 U CN 211787773U
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- plate
- high school
- friction coefficient
- bearing plate
- friction
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Abstract
The utility model relates to a physics experimental apparatus, in particular to friction coefficient experimental apparatus for high school physics. This high school is coefficient of friction experimental apparatus for physics, including the hang plate with arrange the slider that awaits measuring on the hang plate in, characterized by: the inclined plate is arranged on the bearing plate, the right side of the bearing plate is hinged with the bottom plate, pulleys are respectively installed at two ends of the left side of the bearing plate, the left side of the bearing plate is connected with the propelling plate through the pulleys, and the propelling plate is connected with a ball screw. The utility model has the advantages that: the angle of inclination can be slowly pushed to be changed, so that the angle for enabling the sliding block to slide downwards can be found quickly and accurately, and meanwhile, different inclined plates can be replaced conveniently to measure the friction coefficients of different objects.
Description
(I) technical field
The utility model relates to a physics experimental apparatus, in particular to friction coefficient experimental apparatus for high school physics.
(II) background of the invention
The coefficient of friction is the ratio of the friction between two surfaces to the normal force acting on one surface. It is related to the roughness of the surface and not to the size of the contact area. Depending on the nature of the movement, it can be divided into a dynamic coefficient of friction and a static coefficient of friction. The sliding friction force is generated by the relative sliding of two objects when the two objects are contacted with each other. The coefficient of friction can generally be determined by the method of friction angle, which is generally: one of two objects to be measured is placed obliquely as an inclined plane, the other object is placed on an inclined plane body and slides down along the inclined plane body, and the inclined angle of the inclined plane is gradually increased.
Therefore, when the experiment is carried out by high school students, the inclination angle of the inclined plane needs to be gradually increased, and the friction angle is slowly found, so that the existing experimental device wastes time and labor during operation, and is difficult to find the friction angle; in addition, the operation of replacing different slopes is also complicated.
Disclosure of the invention
The utility model discloses a remedy prior art not enough, provide a friction coefficient experimental apparatus for high school physics easy and simple to handle, measurement accuracy is high.
The utility model discloses a realize through following technical scheme:
the utility model provides a high school is coefficient of friction experimental apparatus for physics, includes the hang plate and arranges the slider that awaits measuring on the hang plate in, characterized by: the inclined plate is arranged on the bearing plate, the right side of the bearing plate is hinged with the bottom plate, pulleys are respectively installed at two ends of the left side of the bearing plate, the left side of the bearing plate is connected with the propelling plate through the pulleys, and the propelling plate is connected with a ball screw.
The side surfaces of the bottom plate and the pushing plate are respectively provided with scale marks.
The ball screw is connected with a handle.
The handle is provided with a supporting block in a penetrating mode, and a locking bolt is arranged between the handle and the supporting block.
And a baffle plate is arranged at the bottom of the bearing plate.
The bearing plate is hinged with the bottom plate through a hinge.
The upper part of the inclined plate is provided with a handle.
The utility model has the advantages that: the angle of inclination can be slowly pushed to be changed, so that the angle for enabling the sliding block to slide downwards can be found quickly and accurately, and meanwhile, different inclined plates can be replaced conveniently to measure the friction coefficients of different objects.
(IV) description of the drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1 inclined plate, 2 slide block to be measured, 3 bearing plate, 4 bottom plate, 5 pulleys, 6 pushing plate, 7 ball screw, 8 graduation lines, 9 handle, 10 supporting block, 11 locking bolt, 12 baffle, 13 fold and 14 handle.
(V) detailed description of the preferred embodiments
The attached drawing is a concrete embodiment of the utility model. This embodiment includes hang plate 1 and arranges the slider 2 that awaits measuring on hang plate 1 in, hang plate 1 arranges in and accepts board 3 on, accepts board 3 right side and bottom plate 4 articulated mutually, accepts 3 left sides both ends of board and installs pulley 5 respectively, accepts 3 left sides of board and is connected with propulsion plate 6 through pulley 5, and propulsion plate 6 is connected with ball 7. The side surfaces of the bottom plate 4 and the pushing plate 6 are respectively provided with scale marks 8. The ball screw 7 is connected with a handle 9. The handle 9 is provided with a supporting block 10 in a penetrating way, and a locking bolt 11 is arranged between the handle 9 and the supporting block 10. The bottom of the bearing plate 3 is provided with a baffle plate 12. The bearing plate 3 is hinged with the bottom plate 4 through a hinge 13. The upper part of the inclined plate 1 is provided with a handle 14.
Adopt the utility model discloses a friction coefficient experimental apparatus for high school physics, it rotates to drive ball 7 with hand twist grip 9, ball 7's rotation drives propulsion board 6 and moves on bottom plate 4, propulsion board 6 moves forward and forces pulley 5 to rotate upwards, and then the drive accepts board 3 and upwards rotates, thereby change the angle of hang plate 1, along with the grow of hang plate 1 angle, the slider 2 that awaits measuring begins the gliding, the angle at this moment is the friction angle, this angle size is measured out to the protractor, the tangent value of this angle is friction coefficient promptly. In addition, because the scale marks 8 are arranged on the pushing plate 6 and the bottom plate 4, the height value of the inclined plate 1 corresponding to the pushing plate 6 and the length value of the inclined plate 1 corresponding to the projection of the bottom plate 4 can be obtained, and the friction coefficient can be obtained without using a protractor. The inclined plate 1 is arranged on the bearing plate 3, and the inclined plate 1 can not slide down along with the increase of the angle due to the existence of the baffle plate 12. The tilting plate 1 can be taken out by holding the handle 14 by hand in order to exchange a different tilting plate 1 for measuring the coefficient of friction. Because the slider 2 gliding that awaits measuring needs certain angle, can follow relatively great angle at the beginning and begin the experiment, the removal of propulsion board 6 is convenient for make pulley 5 rotate and then drive hang plate 1 and rotate like this, has avoided when the angle is less, and propulsion board 6 is difficult to push against the pulley and drives hang plate 1 pivoted trouble. When we need to observe or approach the slide block 2 to be tested to slide downwards, the locking bolt 11 can be screwed down, the ball screw 7 and the supporting block 10 are relatively fixed, and then the position of the pushing plate 6 is fixed, so that the pushing plate 6 is prevented from being pushed backwards by the bearing plate 3 and the inclined plate 1, and effective experiments cannot be carried out. If the bearing plate 3 and the pushing plate 6 are not perpendicular and have a certain angle, the pushing force of the pushing plate 6 can make the pulley 5 move upwards due to the action of the pulley 5, and the larger the angle is, the smaller the required force is. Ball 7 can slowly rotate, and then can be meticulously accurate quick the angle that makes 2 gliding of slider that await measuring, convenient operation, labour saving and time saving has improved the efficiency and the confidence of student's experiment.
Claims (7)
1. The utility model provides a high school is coefficient of friction experimental apparatus for physics, includes hang plate (1) and arranges slider (2) that await measuring on hang plate (1) in, characterized by: the inclined plate (1) is arranged on the bearing plate (3), the right side of the bearing plate (3) is hinged to the bottom plate (4), pulleys (5) are mounted at two ends of the left side of the bearing plate (3) respectively, the left side of the bearing plate (3) is connected with the propelling plate (6) through the pulleys (5), and the propelling plate (6) is connected with a ball screw (7).
2. The experimental device for friction coefficient for high school physics according to claim 1, wherein: and scale marks (8) are respectively arranged on the side surfaces of the bottom plate (4) and the pushing plate (6).
3. The experimental device for friction coefficient for high school physics according to claim 1, wherein: the ball screw (7) is connected with a handle (9).
4. The experimental device for friction coefficient for high school physics according to claim 3, wherein: the handle (9) is provided with a supporting block (10) in a penetrating way, and a locking bolt (11) is arranged between the handle (9) and the supporting block (10).
5. The experimental device for friction coefficient for high school physics according to claim 4, wherein: the bottom of the bearing plate (3) is provided with a baffle plate (12).
6. The experimental device for friction coefficient for high school physics according to claim 1, wherein: the bearing plate (3) is hinged with the bottom plate (4) through a hinge (13).
7. The experimental device for friction coefficient for high school physics according to claim 1, wherein: the upper part of the inclined plate (1) is provided with a handle (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922299892.0U CN211787773U (en) | 2019-12-19 | 2019-12-19 | Friction coefficient experimental device for high school physics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922299892.0U CN211787773U (en) | 2019-12-19 | 2019-12-19 | Friction coefficient experimental device for high school physics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211787773U true CN211787773U (en) | 2020-10-27 |
Family
ID=72976464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922299892.0U Expired - Fee Related CN211787773U (en) | 2019-12-19 | 2019-12-19 | Friction coefficient experimental device for high school physics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211787773U (en) |
-
2019
- 2019-12-19 CN CN201922299892.0U patent/CN211787773U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 Termination date: 20211219 |