Friction force demonstrator

The utility model relates to an educational tool, in particular to a friction force demonstrator for physics education. The technical proposal lies in that the utility model comprises a wooden case, a supporting plate in the case, a measuring scale, a conveyer belt, a small object cart, and a spring...

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Bibliographic Details
Main Author MEIQUAN WANG
Format Patent
LanguageEnglish
Published 13.06.2007
Subjects
ADVERTISING
APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE
CRYPTOGRAPHY
DIAGRAMS
DISPLAY
EDUCATION
EDUCATIONAL OR DEMONSTRATION APPLIANCES
GLOBES
PHYSICS
PLANETARIA
SEALS
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Summary:The utility model relates to an educational tool, in particular to a friction force demonstrator for physics education. The technical proposal lies in that the utility model comprises a wooden case, a supporting plate in the case, a measuring scale, a conveyer belt, a small object cart, and a spring; wherein a fan-shaped board provided with the measuring scale is vertically fixed in the horizontally positioned wooden case; the conveyer belt provided with a supporting plate on the bottom is positioned in the front of the bottom of the board; one end of the conveyer belt is moved by a shaft of a pulley driven by a motor; the small object cart is positioned on the upper surface of the conveyer belt and connected with the movable end of the spring, which is fixed and connected with one end of the wooden case, and the endpoint of an indicator. The utility model has the advantages that by making use of the lever principle, the indicator is able to amplify the reading of the spring scale, increases the visibility and improves the effect of demonstration with less errors owing to the adoption of a copper sleeve.
Bibliography:Application Number: CN2006284904U