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YouTubeNext Generation Science
Simple Machines – Pulleys
#pulleys #simplemachines #ngscience https://ngscience.com A pulley is a simple machine consisting of a freely rotating wheel with a rope or chain wound around it. It's used to raise or lower objects, with the load attached to one end and effort applied to the other. Three main types of pulleys exist, each with distinct functionalities and ...
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热门视频
What is a Pulley? - Simple Machines | Science for Kids | Educational Videos by Mocomi
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