|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.