Frictional force demonstrator

A demonstrator and friction force technology, which is applied in the field of friction force demonstrators, can solve the problems of not being able to demonstrate the direction of friction force and the direction of relative motion trend, and the inability to demonstrate static friction force intuitively and accurately, so as to achieve strong practicability and reliable speed. Control and achieve flexible effects

Inactive Publication Date: 2018-08-17
王佳愉
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a friction force demonstrator, which is used to solve the problems in the prior art that the direction of friction force and the direction of relative mo

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
  • Frictional force demonstrator
  • Frictional force demonstrator
  • Frictional force demonstrator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0063] Experiment 1: Demonstrate the relative motion direction of static friction force and the motion direction of sliding friction force

[0064] Clamp the burr film on the friction block, the motor drives the slider and the friction block to make relative motion trend or relative movement, observe the indication of the pointer on the scale plate, and observe the enlarged display on the first display screen to show that the motor pulling device pulls the slider The relationship between the time and the moving distance of the slider. When the pointer changes or the moving distance is zero, it is considered that the slider and the friction block have a relative motion trend at this time. The friction blocks do relative motion.

[0065] When observing the indication of the pointer or zooming in on the first display screen to show the relationship between the time when the motor pulling device pulls the slider and the moving distance of the slider, at the same time, observe the ...

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 discloses a frictional force demonstrator which comprises the components of a horizontal table, a sliding device, a displacement sensor, a motor pulling device, a friction block, a forcemeasuring device, a pointer, a first display device, a switch panel, a second display device, a chute, an amplifying device, an image acquisition device, a computer, a projector, a printer, a blackboard writing device, a projection device and a horizontal measuring device. According to the frictional force demonstrator, according to the indicating condition of the pointer on a scale plate, and amplifying a relation between a slide block pulling time by the motor pulling device and a movement distance of the slide block on the first display device, a relative motion trend direction and a relative motion direction are determined through observing a burr direction on a burr flexible plate by a magnifier, and furthermore the burr direction on the burr flexible plate in a continuous time period in the relative motion trend and the relative movement is acquired through the image acquisition device, and furthermore a burr direction image is amplified and displayed on a projection cloth curtain, thereby quickly, visually and accurately demonstrating the frictional force direction and the relative movement trend direction.

Description

technical field [0001] The invention relates to the field of physics teaching demonstration instruments, in particular to a friction force demonstration instrument. Background technique [0002] The teaching of friction force in physics teaching is a difficult point. If two objects that are in contact with each other and are relatively stationary, under the action of an external force, if they only have a tendency to slide relative to each other but do not slide relative to each other, the force that prevents relative slide between their contact surfaces is called The "static friction force" is tangent to the contact surface and opposite to the direction of relative motion. An object changes with the change of external force relative to it. When the static friction force increases to the maximum static friction, the object will move. Sliding friction is the force that hinders the relative motion between objects in contact with each other, not necessarily the force that hin...

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
IPC IPC(8): G09B23/10
Inventor 王佳愉
Owner 王佳愉
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap