When we think of machines, the likes of robots, appliances and manufacturing equipment come to mind, but scientists also classify such common objects as the screw, the lever, the wedge and the wheel ...

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.

Explains how simple machines, such as levers, pulleys, wheels and axles, and inclined planes, work together to make tasks easier by trading force for distance or vice versa. It illustrates the concept ...

GREENFIELD — While most teachers show their students how to simplify problems, Amy Fletcher likes to teach her students how to make the simplest tasks more complicated. The Greenfield-Central ...