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.

• Planetary units with helical gears, rather than spur gears, have higher torque capacity and run quieter. • Different manufacturers measure and rate backlash in different ways. • Software tools for ...

Scientists have demonstrated that large groups of bacteria can turn microgears millions of times larger than themselves, showing potential for "smart" biomechanical systems. Interestingly, the ...

Gears keep the world moving. Available in a variety of shapes and made from a wide range of materials, gears are found absolutely everywhere. From the tiniest and most delicate gears used by ...

A simple machine is a tool that helps us do work. They use clever shapes to help us move, lift, cut and other types of work. Learn more about the inclined plane, the pulley, the lever, the wheel and ...