imple machines help us change the amount of force or the direction of the force needed to move an object. Find out how by learning more about levers. Major Funding by the Laura Moore Cunningham ...

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called ...

Introduction Looking for a cool and surprising project to show to your friends? Give this activity a stab! Take a potato and a straw—maybe a pencil as well—and challenge your friends to drill holes ...