Gravitational acceleration measurement experiment device based on magnetic induction

Abstract

The invention discloses a gravitational acceleration measurement experiment device based on magnetic induction, which comprises a base and an adjusting mechanism, and is characterized in that the top of the base is fixedly connected with the bottom of a cushion block, a coil is arranged on the cushion block, the coil is connected with a filtering module and an oscilloscope through leads, and a cross rod is arranged above the coil; and the bottom of one end of the cross rod is fixedly connected with a simple pendulum. According to the gravitational acceleration measurement experiment device based on magnetic induction, through the arranged filtering module, the influence of environmental noise can be reduced, pulse signals of the digital storage oscilloscope are recorded, the period of simple pendulum motion is determined, and the gravitational acceleration can be rapidly calculated under the condition that the period and the pendulum length are known according to the formula of the gravitational acceleration; and the device can display the experiment image of the object movement process, facilitates students to quickly understand the movement process of the small ball in the simple pendulum process, facilitates the understanding of the gravitational acceleration, and is suitable for the measurement of the gravitational acceleration.

Description

technical field [0001] The invention relates to the technical field of physical experiments, in particular to an experimental device for measuring the acceleration of gravity based on magnetic induction. Background technique [0002] The experiment of measuring the acceleration of gravity by the simple pendulum method is currently one of the basic experiments of undergraduate physics subjects, and has become an indispensable part of the current university physics experiments. It detects the magnitude of the gravitational acceleration g through the simple pendulum method, and currently occupies a certain position in the teaching and scientific research of university physics. When using the simple pendulum method to measure the gravitational acceleration, the calculation of the gravitational acceleration g needs to measure the time of one cycle of the object moving in the simple harmonic motion and the length of the simple pendulum, and then the experimenter can obtain the obj...

AI Technical Summary

Problems solved by technology

At present, the measurement of the length l of the simple pendulum has been relatively accurate, but the measurement of the period T has a large deviation due to the limited measurement methods.

At present, most of the single pendulum method acceleration of gravity measuring instruments on the market are only a single pendulum on a bracket. The measurement of the swing period needs to be carried out manually, and there are often errors in manual measurement, which leads to the deviation of the calculated gravitational acceleration. correct value

Images