Demonstration instrument for motion theorem of mass center

A demonstration instrument and motion technology, which is applied in the field of the demonstration instrument for the theorem of motion of the center of mass, and can solve the problem of no teaching device in demonstration teaching and the like

Pending Publication Date: 2018-01-12
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no dedicated teaching device for the demonstration teaching of this theorem

Method used

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  • Demonstration instrument for motion theorem of mass center
  • Demonstration instrument for motion theorem of mass center
  • Demonstration instrument for motion theorem of mass center

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Embodiment Construction

[0020] A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0021] Such as Figure 1-Figure 7 Shown, the present invention comprises conical plate 16, and described conical plate 16 is provided with disc 15, and described disc 15 is provided with base plate 13, and described base plate 13 is fixed with one end of fixed shaft 18 and a set of One end of the symmetrical support rod 14, the other end of a group of said support rods 14 is fixed with a U-shaped bracket 22, and the central axes of the two handles 24 pass through the hinged side plates of the U-shaped bracket 22 and are respectively fixedly connected with a few-shaped connecting rod 26 The other end of each of the several-shaped connecting rods 26 is hinged on the circular shaft 19 of the fixed plate 20, and the middle par...

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PUM

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Abstract

The invention discloses a demonstration instrument for motion theorem of mass center. The demonstration instrument comprises a conical plate and is characterized in that a round disc is arranged on the conical plate and is provided with a bottom plate; one end of a fixed shaft and one end of a group of symmetrical supporting rods are fixed on the bottom plate; the other ends of the group of supporting rods are fixedly provided with U-shaped brackets; the central axes of two handles penetrate through side plates of the U-shaped brackets hinged and are respectively and fixedly connected with oneend of each ji-shaped connecting rod; the other end of each ji-shaped connecting rod is hinged on a round shaft of each fixed plate; the middle part of each ji-shaped connecting rod is hinged with one end of each L-shaped connecting rod; the other end of each L-shaped connecting rod is hinged with the upper end of each swinging plate; the two sides of each swinging plate are fixedly connected with one end of each rotating shaft; the other end of each swinging plate is hinged on bumps at the two ends of the U-shaped bracket; and one side of each fixed plate is respectively fixed on the fixed shaft.

Description

technical field [0001] The invention relates to the field of physics teaching of the center-of-mass motion theorem, in particular to a demonstration instrument for the center-of-mass motion theorem. Background technique [0002] The motion theorem of the center of mass is one of the general theorems of physical dynamics, which can be expressed as: the motion of the center of mass of a system of mass points is the same as that of a mass point located at the center of mass, the mass of this mass point is equal to the total mass of the system of mass points, and the force on the mass point is It is equal to that all external forces acting on the particle system move parallel to this point. There is no dedicated teaching device for the demonstration teaching of this theorem at present. This is the weak point of prior art. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a center-of-mass motion theorem demonstrator, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/10
Inventor 邵明辉宋世学
Owner UNIV OF JINAN
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