Experimental setup for verifying that work done by conservative force is independent of path

Abstract

An experimental device for verifying that the work done by a conservative force is independent of the path, the base plate is arranged at the lower part between two supports, and the two ends of the base plate are fixedly connected to the opposite inner sides of the two supports respectively; the upper surface of the base plate is provided with at least two inner grooves; The upper parts of the two brackets are respectively provided with corresponding limit blocks; the beam is arranged on the upper part between the two supports, and the beam is a detachable structure, and its two ends are set on the limit blocks; the beam is provided with at least two A through hole; the through hole and the inner groove correspond up and down; a transparent pipe is arranged between the through hole and the inner groove; the transparent pipe includes a straight pipe and a curved pipe; the internal bottom surface of the transparent pipe is provided with a work state display piece, and the small ball and the work The status indicator touches. This kind of experimental device has a simple structure, the verification process is intuitive, accurate, and easy to operate. It can provide direct perceptual knowledge to the market, with low cost and good effect.

Description

technical field [0001] The invention relates to a teaching tool, in particular to an experimental device for verifying that the work of a conservative force is independent of a path during teaching. Background technique [0002] In daily life, the three known conservative forces are gravity, electric field force and elastic force. In the actual physics teaching process, when it is usually verified that the work of the above-mentioned known conservative force has nothing to do with the path, only relevant formulas are used for derivation, and there is no specific experimental device to carry out intuitive and comprehensive verification. [0003] After retrieval, the Chinese patent "Demonstration Device Independent of Gravity Work and Path (ZL2010205345829)" discloses a demonstration device for verifying that gravity work is independent of path. Although the device specifically shows that the gravitational work of objects in different paths is the same, however, It also only ...

AI Technical Summary

Problems solved by technology

[0003] After retrieval, the Chinese patent "Demonstration Device Independent of Gravity Work and Path (ZL2010205345829)" discloses a demonstration device for verifying that gravity work is independent of path. Although the device specifically shows that the gravitational work of objects in different paths is the same, however, It also only shows the conservative force of gravity, and cannot verify the gravitational work of the other two known conservative forces, and the function is relatively simple

In addition, in this device, what is used to display the gravity work is the buffer material filled in the box at the bottom of the channel. It is difficult to accurately see the degree of material depression with the naked eye. Although the general situation of the gravity work can be seen, it cannot be grasped. The accuracy of its accurate work is low, and it is impossible to accurately judge the precise relationship between different paths and gravity work

Images