An experimental device that can visually display the direction of friction force

An experimental device and visual display technology, applied to educational appliances, instruments, teaching models, etc., can solve the problems that do not involve the direction of friction of objects on the turntable, the effect is not good, and the friction of objects that cannot be applied is used to stimulate learning. Enthusiastic, structurally simple, reproducible effects

Inactive Publication Date: 2015-11-18
黄亿蓂
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in high school physics classroom teaching, there is no demonstration experimental device involving the direction of friction on the object on the turntable, and many designers have designed many experiments for this difficulty, but the effect is not good
For example, the patent number is CN102466530A, and the Chinese invention patent named "Friction Meter" can only be applied to the demonstration of static friction or dynamic friction on a linearly moving object, and cannot be applied to the demonstration of friction on a uniform circular motion object.

Method used

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  • An experimental device that can visually display the direction of friction force
  • An experimental device that can visually display the direction of friction force
  • An experimental device that can visually display the direction of friction force

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Embodiment 1

[0041] Please continue to refer to figure 1 and figure 2 , Embodiment 1 of the present invention is:

[0042] An experimental device that can visually display the direction of friction force, including a housing 1 and a base 2, the housing 1 is made of rigid and lightweight materials, and the bottom of the housing 1 is fixed on the bottom of the base 2 through an elastic rubber film 3 On the upper surface, a transparent display panel 4 is arranged on the top of the housing 1, a tumbler 5 is fixed inside the housing 1, the tumbler 5 is vertically arranged, and the bottom of the tumbler 5 is supported on the upper surface of the base 2 A spacer 13 is provided between the bottom of the tumbler 5 and the upper surface of the base 2, the spacer 13 is provided with a through hole for the second connecting rod 8 to pass through, and the inside of the tumbler 5 is along the central axis direction. A first connecting rod 6 is extended upwards, the top of the first connecting rod 6 i...

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Abstract

The invention relates to an experimental facility capable of visually displaying the direction of friction force. A tumbler and a laser diode are adopted to demonstrate the direction of the friction force of an object during movement; the experimental facility has a simple structure, can be operated conveniently, has obvious and intuitive experiment phenomenon, is good in stability and strong in repeatability, is suitable for researching the direction of the friction force of the object in various motion states such as curvilinear motion, rectilinear motion and the like, and has strong interestingness, remarkable teaching efficiency and high safety performance.

Description

technical field [0001] The invention relates to a friction force experimental device, in particular to an experimental device which can visually display the direction of friction force. Background technique [0002] Friction force is one of the key points of high school physics teaching content, and the friction force direction of the object on the turntable moving at a uniform speed points to the center of the circle along the radius. The direction of frictional force always forms a sharp contradiction with the direction of motion of the object on the same straight line, which makes it difficult for many students to understand. Many teachers are also at a loss for this content, and can only draw more conclusions, that is, an object moving in a uniform circular motion needs a force pointing to the center of the circle to reverse the direction of the friction force. Obviously, this is a method of explanation. However, for high school students who are still relatively rudimen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/08
CPCG09B23/08
Inventor 黄亿蓂张滨
Owner 黄亿蓂
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