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Experimental instrument for testing relevant factors affecting friction

A technology of related factors and experimental instruments, applied in instruments, educational appliances, teaching models, etc., can solve problems such as difficult conditions for uniform motion of wooden blocks, inaccurate friction, unfavorable analysis and comparison, etc. The experimental operation is convenient and the design structure is simple.

Inactive Publication Date: 2019-01-22
四川省通江县永安中学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: it is difficult to grasp the condition of making the wooden block move at a uniform speed in the traditional friction measurement experiment, so the measured friction force is inaccurate, and it is not conducive to the realization of analysis and comparison. The present invention An experimental instrument for testing the relevant factors affecting friction is provided to solve the above problems

Method used

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  • Experimental instrument for testing relevant factors affecting friction
  • Experimental instrument for testing relevant factors affecting friction
  • Experimental instrument for testing relevant factors affecting friction

Examples

Experimental program
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Embodiment 1

[0023] Such as Figure 1 to Figure 4 As shown, an experimental instrument for testing relevant factors affecting friction force includes an experimental table 1, a spring dynamometer 2, a slider 3, a pole 4 and a transmission device, and the pole 4 is fixed on the experimental table 1 Above, the pole 4 is provided with a plurality of grooves 5, one end of the spring force gauge 2 is sleeved on the pole 4, the spring force gauge 2 is provided with a display screen 6, and the spring force gauge 2 is provided with a display screen 6. A tension sensor is installed in the dynamometer 2, the tension sensor is electrically connected to the display screen 6, buttons 7 are arranged on both sides of the spring dynamometer 2, and the other end of the spring dynamometer 2 is hung on the slider 3 Above, the slider 3 is placed on the transmission device, the transmission device includes a conveyor belt 8 and a motor, the conveyor belt 8 is controlled by the motor to rotate, the conveyor bel...

Embodiment 2

[0025] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that two sets of transmission experiment instruments are arranged on the experiment table 1 . The keys 7 include a power key, a maximum value key, a minimum value key and a reset key. The vertical rod 4 is an iron rod, and a layer of anti-corrosion material is coated on the vertical rod. The paper strips on the conveyor belt 8 are replaceable. When measuring the relationship between the friction force and the roughness of the contact surface, it is necessary to replace the paper strips with different roughness, so the society makes it easier to do better experiments with replaceable ones.

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Abstract

The invention discloses an experimental instrument for testing relevant factors affecting friction. The problem that the condition of making a wood block move at a constant speed is difficult to graspin traditional experiment for measuring the friction, and consequently the measured friction is not accurate is solved. The experimental instrument includes an experiment table, a spring dynamometer,a sliding block, a vertical rod and a transmission device. The vertical rod is fixed to the experiment table, and a plurality of grooves are formed in the vertical rod, the vertical rod is sleeved atone end of the spring dynamometer, and the spring dynamometer is provided with a display screen; the spring dynamometer is internally provided with a tension sensor, the tension sensor is electrically connected with the display screen, the other end of the spring dynamometer is hung on the sliding block, the sliding block is placed on the transmission device, the transmission device comprises a conveyor belt and a motor, the conveyor belt is pasted with strips with different roughness degrees, the two sides, near one end of the vertical rod, of the conveyor belt are provided with rotating arms, the rotating arms are connected with the conveyor belt through a pin shaft, and the other ends of the rotating arms are fixed to the experiment table.

Description

technical field [0001] The invention relates to the technical field of physical experiment equipment, in particular to an experiment instrument for testing related factors affecting friction. Background technique [0002] The experiment of exploring the factors affecting friction is a common basic mechanics experiment in physics. This experiment is usually demonstrated by teachers in the classroom. The key point of this experiment is to ensure the uniform motion of the object, and use a dynamometer to measure the friction force on the object when it moves , and then conduct qualitative and quantitative analysis according to the size of the friction force, and then obtain several factors that affect the friction force. The usual experimental method is to put paper strips with different degrees of roughness under the wooden block, hook the wooden block on the spring dynamometer, and the spring dynamometer is fixed on a rod, and the wood is measured by pulling the paper strip a...

Claims

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Application Information

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IPC IPC(8): G09B23/08G09B23/10
CPCG09B23/08G09B23/10
Inventor 杨怀银向志佘朝庭
Owner 四川省通江县永安中学校
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