How levers work (Vocabulary#3)

1. Simple Machine: A device with few parts that makes it easier to do work.
2. Effort force: The force applied to a machine.
3. Resistance Force:The force that a machine acts against.
4. Lever: A simple machine made of a rigid bar on a pivot point.
5. Fulcrum: The pivot point of a lever.
6. Mechanical advantage:The number of times a machine multiplies the force applied.
7. Pulley:A grooved wheel that turns by the action of a rope in the groove.
8. Wheel and axle:A simple machine made of a handler or axis attached to the canter of a wheel.