Experimental observation of permanent magnet rotation

Abstract

Why does the Earth rotate? At present, it is impossible to use an experimental device to show which forces cause planets (such as Earth) to rotate in the solar system. Therefore, we developed a device to observe the rotation of a permanent magnet in a magnetic field to achieve an understanding of rotational force. A permanent magnet rotating under the action of a DC motor is installed on Motor Shaft; a permanent magnet designed to rotate in a magnetic field is placed in a circular container with water and floats on the surface of the water. Using the above setup, experimental methods and procedures based on this research can be used to observe the rotational behaviour of a permanent magnet in a magnetic field, understand the reason for its rotation, and determine the strength of the rotational force of the permanent magnet in the magnetic field.