A Friction Exploration Experimental Apparatus
An experimental instrument and friction force technology, applied in the direction of instruments, educational appliances, teaching models, etc., can solve the problems of low precision of spring scales, difficult to achieve uniform motion, and inaccurate measurement, and achieve accurate experimental results, easy to understand, and experimental process. Simple and clear effect
Active Publication Date: 2017-07-11
四川科业教学仪器设备有限责任公司 +1
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- Claims
- Application Information
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Problems solved by technology
From the point of view of the existing experimental equipment, there are mainly the following problems: ①The measurement is not accurate enough, because the friction force is small and the precision of the spring scale is low, which directly affects the measurement
② There are many human factors, such as: during the measurement process, the movement of the object should be kept at a constant speed, but it is difficult to achieve a uniform movement no matter whether it is pulled by manpower, yards or pulleys
Method used
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Embodiment Construction
[0025] refer to Figure 2-7 , a kind of friction force exploration experiment instrument, comprises single pendulum mechanism 4, slide block 6 and slide rail 5, single pendulum mechanism 4 comprises support 41 and pendulum ball 43, pendulum ball 43 is suspended on support 41. The slide rail 5 is horizontally and fixedly installed on the support boss 7, the slide rail 5 is provided with a groove 51, the slide block 6 is placed in the groove 51, and the swing ball 43 hits the slide block 6 at a zero-degree swing angle position to Push the slider 6 to move in the groove 51 . The support boss 7 can be selected according to the position of the pendulum ball 43 and the slider 6 with a suitable height, so as to ensure that the pendulum ball 43 just hits the slider 6 when it swings to the zero-degree swing angle position, that is, the collision point a of the pendulum ball 43 It fits with the collision point a' of the slider 6.
[0026] refer to Figure 5 , Figure 6 , The slider ...
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The invention discloses a friction force exploration experimental instrument which includes a single pendulum mechanism, a slider and a sliding rail, wherein the single pendulum mechanism includes a support and a swing ball; the swing ball is hung on the support; the sliding rail is horizontally and fixedly mounted; a groove is formed in the sliding rail; the slider is placed in the groove; the swing ball at a zero swing angle strikes the slider and pushes the slider to move in the groove; a replaceable balancing weight is arranged on the slider, and a replaceable contact bottom layer is arranged at the bottom of the slider; a replaceable contact surface layer is arranged at the bottom of the groove. The friction force exploration experimental instrument provided by the invention is multifunctional and can display a plurality of factors affecting the frictional force in an all-round manner; the experimental effect is intuitive and easy to understand.
Description
technical field [0001] The invention belongs to the technical field of experimental teaching equipment, and in particular relates to an experimental instrument for exploring friction force. Background technique [0002] Friction refers to the force that hinders relative motion (or hinders relative motion tendency) when an object moves relatively (or has a tendency to move) on the surface of another object. However, primary and secondary school students still have many doubts when they first come into contact with the concept of friction, because there are many factors that affect friction, such as: the pressure of the contact surface, the roughness of the contact surface, the direction of motion, the size of the contact surface, and the material of the contact surface composition etc. In order to make it easier for students to deeply understand the factors that affect friction, the friction exploration demonstration device came into being. [0003] Such as figure 1 As sho...
Claims
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IPC IPC(8): G09B23/10
CPCG09B23/10
Inventor 毛翔宇杨晓林王琴
Owner 四川科业教学仪器设备有限责任公司