Levers are literally all around us. You body uses them to move, pick up a pen to sign your name and you’ll use mechanical advantage to make that ballpoint roll, and that can of soda doesn’t open ...

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 affects ...

Your goal is to raise the tip of the obelisk three feet and to support it using as few blocks as possible. You can locate the fulcrum at one of three points: It is now in the middle location. The ...