Rigid rotation experimental apparatus for spiral air tracks

Abstract

The invention relates to a rigid rotation experimental apparatus for spiral air tracks. The apparatus comprises an air track, a plurality of light gates, a slider with a shade plate, an air source and a time recorder. The apparatus is characterized in that the air track is composed of a front linear air track, a rear linear air track, left concentric semi-arc air tracks and right concentric semi-arc air tracks; the light gates are disposed at the front end and rear end of the air track and the connections of the air tracks. During an experiment, rigid motion parameters are analyzed by recording the time of the slider passing the photoelectric gates. The air track experiment and the rigid rotation experiment are combined, rotational energy of a whole motion system is conserved, and related physical quantities of rigid curvilinear motion with different rotational radiuses are studied through the concentric semi-arc air tracks. Rigid linear motion and curvilinear motion are combined through the linear segments of the air track, the relation between the linear motion physical quantities of an object and its curvilinear motion physical quantities is visualized, and the apparatus is suitable for physics teaching.

Description

technical field [0001] The invention relates to a physical experiment teaching instrument, in particular to a spiral air cushion guide rail rigid body rotation experimental device. Background technique [0002] Air cushion rail experiment and moment of inertia measurement experiment are important parts of college physics experiment teaching. Among them, the air-cushion guide rail experiment is often used to measure the physical quantity of the linear motion of the rigid body and demonstrate the law of conservation of momentum. However, most of the existing air-cushion guide rails are linear, which cannot complete the simulation of the rigid body curve motion and the measurement of the rotational physical quantity. [0003] Moment of inertia is an important physical quantity of rigid body curve motion. Measuring and understanding the physical meaning of moment of inertia of rigid body is an important content of college physics teaching. The moment of inertia testing devices ...

AI Technical Summary

Problems solved by technology

The three-wire pendulum experiment often causes the combined movement of rotation and translation of the system due to the deformation of the suspension wire, which causes deviation or even error in the test results; while the moment of inertia instrument is greatly affected by the time measurement in the experiment, and the data stability is poor.

Moreover, most of the existing experimental devices are complicated, and the experimental principles are not intuitive. It is not easy for students to understand the physical meaning of the moment of inertia and the related properties of the object's curved motion. At the same time, the comparison between the linear motion and the curved motion of the object is not realized.

Images