Gravitational acceleration measuring method and device thereof

Abstract

The invention relates to the field of teaching equipment, and aims to provide a gravitational acceleration measuring method and a device thereof. According to the gravitational acceleration measuring method and the device, a laser transmitting device replaces a traditional ticker timer, thereby realizing no-contact ticking, reducing effect of a friction resistance of a traditional tape belt, and realizing more accurate experiment result. The gravitational acceleration measuring method has beneficial effects of simple structure and convenient operation. Ticking on a falling object which is coated with fluorescent powder is realized through the laser transmitting device, thereby realizing visual and obvious phenomenon and high stability. The gravitational acceleration measuring method is suitable for self research and self experience of a student, thereby improving persuasiveness in teaching. The falling object can automatically return to normal after a certain time period. High repeatability is realized, and furthermore consumable materials are greatly saved. Through a strange optical phenomenon of making the falling object emit light by means of the laser transmitting device, attention of the student can be focused to the experiment, thereby improving studying enthusiasm of the student and improving teaching effect.

Description

technical field [0001] The invention relates to the field of teaching equipment, in particular to a method for measuring the acceleration of gravity and a device thereof. Background technique [0002] Free fall is one of the key and difficult points of high school physics teaching content. However, because the speed of the free-falling object is too fast, many teachers are at a loss for accurate measurement of the acceleration of gravity, which makes the classroom teaching less convincing, makes it difficult for students to experience it personally, and affects the quality of teaching. The best way to break through this difficulty is to allow students to explore independently through experiments and gain personal experience. At present, in the high school physics classroom teaching, it is mainly introduced that the dot timer cooperates with the paper tape and the weight to complete the experiment. However, it is difficult for the experimenter to control the vertical state o...

AI Technical Summary

Problems solved by technology

[0003] The application number is: 201410153421.8 The teaching gravity acceleration measuring instrument uses the ball to roll in the spiral channel to measure the acceleration of the ball, and then measures the acceleration of gravity, but there is friction between the ball and the spiral channel, and there is a certain error in the measured acceleration

[0004] The application number is: 201510003546.7, a method for measuring the acceleration of gravity, using a force sensor to record the falling time of the ball, but the operation is inconvenient, the structure is not intuitive enough, and it is not suitable for students to operate

Images