Comprehensive demonstration instrument for demonstrating angular momentum conservation and rotational inertia and demonstrating method thereof

Abstract

The invention relates to a comprehensive demonstration instrument for demonstrating angular momentum conservation and rotational inertia. The comprehensive demonstration instrument is characterized by comprising a singlechip, a digging rope motor and a variable frequency driving motor, wherein the singlechip is used as the control center of the comprehensive demonstration instrument. The comprehensive demonstration instrument further comprises a support shaft, wherein a rotating arm which rotates along with the support shaft is arranged on the support shaft; heavy balls are sleeved at two sides of the rotating arm; the heavy balls are connected with an edge digging rope and are driven by the digging rope; the two heavy balls are pulled to synchronously move inwards / outwards along the rotating arm; the support shaft is connected with the center of an outer rotating disc below the support shaft; a clamping groove is formed below the outer rotating disc; the clamping groove is gear-shaped; the clamping groove is internally provided with an inner rotating disc; the inner rotating disc is fixedly connected with a clamping plate through a torsional spring; the clamping plate corresponds to the clamping groove; when the variable frequency driving motor is started, the inner rotating disc is driven by the variable frequency driving motor to rotate, the torsional spring deforms, the clamping plate is meshed with the clamping groove, the outer rotating disc is driven to rotate, and the outer rotating disc drives the support shaft to rotate; and when the variable frequency driving motor is stopped, the speed of the inner rotating disc is smaller than the speed of the outer rotating disc, the torsional spring resets, and the clamping plate is separated from the clamping groove.

Description

technical field [0001] The invention relates to a comprehensive demonstration instrument for demonstrating conservation of angular momentum and moment of inertia and a demonstration method thereof, belonging to the technical field of scientific and educational equipment. Background technique [0002] With the upgrading and development of science and education products and the improvement of social needs, universities and some scientific research manufacturers are also turning their attention to the market of science and education products. The law of conservation of angular momentum is one of the most common laws in nature. The theories of conservation of angular momentum and rotation are widely used in real life, such as simulating the use of gravity in the aerospace industry; the law of rotation and the law of conservation of angular momentum are important in mechanics. For the two knowledge points, however, the teaching devices for the demonstration of the principles of t...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: the existing rotational inertia demonstration device and the angular momentum conservation demonstration device are two independent devices, which need to be demonstrated separately, and the demonstration effect is not good

Images