Experiment demonstration tool capable of visually seeing speed of moving ball

Abstract

The invention relates to the technical field of physical experiment teaching demonstration tools, in particular to an experiment demonstration tool capable of visually seeing the speed of a moving ball, which comprises a metal ball, a second metal ball, an experiment platform, a pair of parallel horizontal rails, a pair of parallel slope rails and a plurality of groups of control circuits, the diameters, the volumes and the densities of the first metal ball and the second metal ball are equal to the roughness of the outer surface; the pair of parallel horizontal rails is composed of a plurality of first rolling sections and second rolling sections, the pair of parallel slope rails is composed of a plurality of third rolling sections and fourth rolling sections, and the positions, projected on the horizontal plane, of the third rolling sections correspond to the positions of the first rolling sections in a one-to-one mode. The first rolling section and the third rolling section are electrically connected with the control circuit; the control circuit is used for judging the movement speed of the first metal ball and the second metal ball. The tool is simple in structure and novel in design. According to the invention, the movement speed of the small metal ball on the track can be visually displayed.

Description

technical field [0001] The invention relates to the technical field of teaching demonstration appliances for physics experiments, in particular to an experimental demonstration appliance that can visually see the speed of a moving ball. Background technique [0002] In the physics teaching experiment, we have discussed which speed is faster, linear motion or curved motion. Many students have different opinions on this issue, especially for students who are not clear about mechanics. In order to let students have an intuitive feeling, increase The fun of the experimental classroom, the teacher uses the method of experiment to verify the content of this topic, usually the teacher will prepare two tracks, one is a smooth track, the other is a track with two slopes, put two same small balls Put them on the same end of the track, and then release the balls at the same speed to see which one reaches the other end of the track first. During the experiment, we can see that the ball...

AI Technical Summary

Problems solved by technology

During the experiment, we can see that the ball on the slope track moves faster than the ball on the straight track, but because the ball moves too fast on the track, there are many students, and the distance from the experimental platform is far away. Students need to be very close to see clearly, which brings inconvenience, and the size and color of the two small balls are the same, and there is also the possibility of misreading. During the experiment, the students could not see clearly enough, and there is room for improvement

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