A rigid body moment of inertia demonstration device and demonstration method
A demonstration device and rigid body rotation technology, applied in teaching models, instruments, educational appliances, etc., can solve problems such as inconvenience for students to watch, and achieve the effect of simple circuit connection structure, simple structure, and intuitive demonstration image.
Inactive Publication Date: 2018-10-02
桂林理工大学博文管理学院
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Problems solved by technology
But it can only be demonstrated on a horizontal plane, which is not convenient for students under the podium to watch
Method used
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[0021] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, and therefore are only examples, and should not be used to limit the scope of protection of this patent.
[0022] Such as figure 1 , figure 2 and image 3 , a rigid body moment of inertia demonstration device includes a backboard 1 , an experimental device 2 and a control device 3 . The experimental device 2 is installed on the backboard 1, and the backboard 1 adopts an acrylic board. The experimental device 2 includes a suction cup electromagnet 21 located in front of the backboard 1, a steel ball 22, a balance bar 23, a weighting member 26 and a Push-pull electromagnet 27 at the back. The balance bar 23 is symmetrically provided with through holes 24, the number of the through holes 24 is 4-6 groups, and the c...
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The invention discloses a rigid body moment of inertia demonstration apparatus and a demonstration method. The demonstration apparatus includes a backboard, an experiment apparatus and a control apparatus. The experiment apparatus is mounted on the backboard and includes a sucker type electromagnet, a steel ball, a balance pole, and overweight pieces which are arranged in front of the backboard and also a push-and-pull electromagnet which is behind the backboard. The balance pole is symmetrically provided with thorough holes, and the center of the balance pole is provided with a center shaft which penetrates the backboard so as to enable the balance pole to be in rotary installation on the backboard. The overweight pieces are symmetrically arranged in the through holes of the balance pole, which can change the weight of the entire balance pole, and the sucker type electromagnet is mounted above one end of the balance pole when the balance pole is horizontally arranged; the push-and-pull electromagnet is arranged below the center shaft, and a top pole of the push-and-pull electromagnet abuts against the center shaft which penetrates the backboard. According to the invention, the demonstration apparatus has simple structure, is easy to use, has direct appearance, can clearly demonstrate influence factors of rigid body rotation of inertia.
Description
technical field [0001] The invention relates to a physics teaching experiment instrument, in particular to a rigid body moment of inertia demonstration device and demonstration method. Background technique [0002] Physics is a subject that studies the general laws of motion of matter and the basic structure of matter. Physical experiments can clearly display physical phenomena and laws, so as to achieve good teaching effects. The rigid body moment of inertia in college physics has complex formulas and abstract concepts, which are difficult for students to understand. Therefore, an intuitive and effective demonstration experiment of rigid body moment of inertia is the best teaching method. [0003] At present, in college physics teaching, many schemes have been devised in order to demonstrate directly the factors that affect the moment of inertia of rigid bodies. For example, the patent announcement number CN202177996U discloses a portable rigid body moment of inertia tea...
Claims
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IPC IPC(8): G09B23/10
CPCG09B23/10
Inventor 杨达莉杨祥
Owner 桂林理工大学博文管理学院