Unlock instant, AI-driven research and patent intelligence for your innovation.

Pendulous device

A swing device and body technology, applied to educational appliances, instruments, teaching models, etc., can solve the problems of single pendulum swinging randomly, not being regarded as a single pendulum, and the time for a single pendulum to decrease in amplitude for a long time

Inactive Publication Date: 2015-04-22
GUANGDONG INST OF ARTS & SCI
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Dynamics research sometimes involves a simple pendulum. For example, there are experiments that prove that the period of a simple pendulum has nothing to do with the mass of the pendulum ball. The suspension point of the existing pendulum ball is either at the top of the pendulum ball or at the bottom end of the pendulum ball. A problem: Change the pendulum ball with a different radius to do the experiment, and the length of the pendulum will be changed
The deficiencies of the prior art are: the time for the amplitude of the pendulum to decrease is too long, usually more than 20 minutes, and for classroom demonstrations, the time of 20 minutes is too long
[0004] In addition: when the swing time is more than 10 minutes, the chaotic phenomenon of the simple pendulum often occurs (some people call it the chaotic phenomenon of the pendulum), and sometimes it changes from the simple pendulum to the conical pendulum inexplicably. is an undesirable phenomenon in this experiment
If after 10 minutes of measurement, the amplitude does not decrease too much, but the motion of the pendulum can no longer be regarded as a simple pendulum, then the experiment should be restarted

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pendulous device
  • Pendulous device
  • Pendulous device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] See attached figure 1 , is a schematic diagram of a partial structure of Embodiment 1 of the present invention. This figure reflects the relationship between the first hole 1 and the second hole 2: the pendulum ball body 3 has the first hole 1 and the second hole 2, the axes of the first hole 1 and the second hole 2 are collinear and pass through the center of the ball, and the first hole 1 and the second hole 2 pass through the center of the ball. The aperture of the first hole 1 is larger than the aperture of the second hole 2, the intersection surface of the first hole 1 and the second hole 2 is a plane passing through the center of the sphere, and the intersection surface is perpendicular to the axis of the first hole 1;

[0026] figure 2 It is a structural schematic diagram of Embodiment 1 of the present invention. The first hole 1 is filled with a round tube 4, the first hole 1 is fixedly connected with the round tube 4, the outer diameter of the round tube 4 i...

Embodiment 2

[0035] See attached image 3 , is a schematic diagram of the pendulum rope structure.

[0036] The structure of described pendulum rope is like this: thin rope 5 covers are provided with a plurality of equidistant discs 6, and the axis of thin cord 5 passes through the center of circle of disc 6, and thin cord 5 and disc 6 are fixedly connected, and circle The plane where the sheet 6 is located is perpendicular to the string 5 in the straightened state, the round sheet 6 is covered with a hose 7, and the connection mode between the edge of the round sheet 6 and the inner wall of the hose 7 is a fixed connection.

[0037] The principle is: during the swinging process, the disc 6 is deformed, and part of the deformation cannot be restored to its original shape, so the energy loss causes the amplitude of the simple pendulum to decrease rapidly.

[0038] In fact, there are many ways to make the amplitude of a simple pendulum decrease rapidly. For example: put the pendulum ball i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a simple pendulum device. In the prior art, when a pendulum ball is replaced, a pendulum length needs to be determined again, and pendulating is prone to being in chaos. The pendulum length of the pendulous device is unchanged. According to the technical scheme needed to solve the technical problem, the pendulous device comprises a pendulum ball body and a pendulum rope and is characterized in that the pendulum ball body is provided with a first hole and a second hole, the axis of the first hole and the axis of the second hole are coaxial and penetrate through a ball center, the bore diameter of the first hole is larger than that of the second hole, the intersection face of the first hole and the second hole is a plane passing through the ball center, and the intersection face is perpendicular to the axis of the first hole; the first hole is filled with a round tube, the first hole is fixedly connected with the round tube, the outer diameter of the round tube is equal to the inner diameter of the first hole, the inner diameter of the round tube is smaller than the bore diameter of the second hole, and the two end faces of the round tube are arranged on the intersection face of the first hole and the second hole and the surface of the pendulum ball body respectively; the density of the round tube is smaller than that of the pendulum ball body; the mass center of the whole formed by the pendulum ball body and the round tube is arranged at the ball center of the pendulum ball body.

Description

technical field [0001] The invention relates to a simple pendulum used for dynamics research and demonstration. Background technique [0002] Dynamics research sometimes involves a simple pendulum. For example, there are experiments that prove that the period of a simple pendulum has nothing to do with the mass of the pendulum ball. The suspension point of the existing pendulum ball is either at the top of the pendulum ball or at the bottom end of the pendulum ball. A question: Change the pendulum length of the pendulum ball with a different radius for the experiment. The reason is: the length of the pendulum refers to the distance from the suspension point to the centroid of the pendulum ball. It should be noted that pendulum length and rope length are two different physical concepts. Those skilled in the art should be able to distinguish the meaning of the length of the rope from the meaning of the length of the pendulum. [0003] There is still a shortcoming for the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/10
Inventor 詹峰龙安源
Owner GUANGDONG INST OF ARTS & SCI