When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.

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 ...

Seventy years of scientific exploration have led New Orleans youths to thousands of dollars in prizes, groundbreaking innovations, trips abroad, and in many cases, to their futures. Just ask Britton ...