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Simple Machines Word

Science Vocab

QuestionAnswer
Work Force exerted on an object that causes it to move.
Simple Machines A device that allows you to do work in a way easier and more effective.
Resistance The object to be moved.
Effort The amount of force applied to move an object.
Mechanical Advantage The number of times a machine multiplies the input force of the machine. MA=Output Work/Input Work
Efficiency The percentage of the input work that is converted to output work. Efficiency=Output Work/Input Work*100
Inclined Plane A flat sloped surface used to help move an object.
Wedge A device that is thick at one end and tapers to a thin edge at the other end.
Screw An inclined plane wrapped around a cylinder.
Lever A rigid bar that is free to pivot, ar rotate on a fixed point.
Wheel and Axle A simple machine made of circular cylindrical objects fastened together that rotate about a common axis.
Pulley A grooved wheel with a rope or cable wrapped around it.
Fixed Pulley It does not change the amount of force needed. It changes direction.
Movable Pulley It decreases amount of input force needed. It doesn't change the direction.
Compound Machines A machine made out of two or more simple machines.
Created by: RahulD
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