Discusses the principles of levers, a type of simple machine that helps lift heavy loads by changing the direction or magnitude of force applied. It explains how the position of the fulcrum ...

Learn how pulleys, levers and gears can be used to lift and move heavy loads with these interactive learning resources for KS2 Science students aged 7-11 from BBC Bitesize.

His invention makes use of the lever, one of Renaissance scientists’ six simple machines. Physicists would tell you that these elongated arms, fixed at one end to what’s known as a hinge or ...