PHYSICS - Forces - Levers and Gears

In this video we’re going to learn about levers and gears. Levers are simple machines or mechanisms that make work easier to do. They use moments. To reduce the force needed to perform a task. Gears are wheels with teeth on the edges that fit together. They transmit power from one part of a machine to another part. So in a bike, they take the power from the pedals to the back wheel.