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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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