Gears can change the direction or the speed of movement. As there are teeth around the edge of the gears they grip together and so can withstand a greater force, enabling them to move large items ...

How Levers, Pulleys and Gears Work Posted: February 14, 2025 | Last updated: February 14, 2025 This video explores different methods that can be use to amplify a force, and focuses on three types ...