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 ...

Source: NOVA: "Secrets of Lost Empires: Easter Island" This resource was adapted from NOVA: "Secrets of Lost Empires: Easter Island." Archaeological evidence suggests that ancient peoples were able to ...

This interactive activity from the NOVA website challenges users to lift one end of an obelisk to a height of three feet using only a lever, a fulcrum, weights, and some supporting stones. Levers are ...

Put the fulcrum near a table or lectern that a volunteer can grab. Mount the beam on the fulcrum with the short end near the table or lectern. The ratio of lengths for the short arm to the long arm ...

Mechanical advantage is the amount of help you get using a machine in comparison to doing something with just human effort, and it is created by levers. Therefore, the mechanical advantage = 200 ÷ 100 ...