Physical friction force experiment demonstration device

Abstract

The invention discloses a physical friction force experiment demonstration device which comprises a bottom plate, a top rod, threaded rods, a first sliding plate, a second sliding plate and a metal rod. Sliding blocks sleeve on the clamping threaded rods; fixed screw caps are in threaded connection to the peripheries of the clamping threaded rods above the sliding blocks; pressing rods are rotatably connected to the middle parts between the sliding blocks through support rods; the clamping threaded rods are in threaded connection to one sides of the pressing rods; a groove is formed in the position, corresponding to a turning wheel, of the lower surface of the second sliding plate; the first sliding plate sleeves at the position, close to one end of the second sliding plate; the two clamping threaded rods are welded onto a side plate; the sliding blocks sleeve on the clamping threaded rods, so that when in use, the sliding plates can be erected and are limited through inserting pin shafts into through holes, and an experiment can be carried out conveniently; in addition, the sliding plates are clamped and fixed through the fixed screw caps, so that the friction force experiment demonstration in the perpendicular direction can be carried out on the sliding plates when in use.

Description

technical field [0001] The invention relates to the technical field of physical experiments, in particular to a demonstration device for physical friction experiments. Background technique [0002] The force that hinders the relative motion (or relative motion tendency) of objects is called friction. The direction of friction is opposite to the direction of relative motion (or relative motion tendency) of objects. There are three types of friction: static friction, rolling friction, and sliding friction. When an object slides on the surface of another object, the friction that hinders their relative motion occurs between the contact surfaces, which is called sliding friction. The magnitude of the sliding friction is related to the roughness of the contact surface and the magnitude of the pressure. The greater the pressure, the rougher the contact surface of the object, and the greater the sliding friction generated. The methods of increasing favorable friction include: i...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the defects of its own structure, the friction experiment demonstration device in the prior art can only be used for experiments on a single substance, which makes it difficult to produce contrasting effects during the experiment, so I cannot satisfy the current situation. technology required

[0004] 2. The friction experiment demonstration device in the prior art can only experiment with a single inclined plane, and the friction experiment also involves the friction experiment of the vertical plane, and the equipment in the prior art does not have the experimental structure of the vertical plane, so it cannot meet the requirements. required by existing technology

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