Simple Machines
  Making Work Easier


Simple Machine- A machine with few moving parts or no parts at all.

Mechanical Advantage- The number of times a machine multiplies the force applied.

Effort Force- Force you apply to a simple machine.

Resistive Force- The Force against which the machine acts.

Output Force- Force the machine applies to object after we supply the effort force.

Incline Plane- A straight , slanted surface. They multiply the effort force needed to lift an object.

Pulley- A rope fits over a grooved wheel, the wheel turns when rope moves over it.

Pulley Systems- Several pulleys acting together. They allow a mechanical advantage to occur.

Lever: levers have a rigid bar that rests on a pivot point called a fulcrum. There are 3 classes of levers.


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