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Vocabulary

Machines

TermDefinition
machine any device that helps people do work by changing the way the work is done
work input work that you do on a machine
work output work done by the machine on an object
input force force you apply to a machine through a distance
output force the force a machine exerts on an object
mechanical advantage the number of times the machine multiplies the input force
mechanical efficiency a comparison of a machine’s work output with the work input
lever a simple machine that has a bar that pivots at a fixed point
fulcrum the fixed point of a lever
wheel and axle a simple machine that is made of a wheel connected to a smaller cylindrical object, the axle
pulley a simple machine that has a grooved wheel that holds a rope or a cable
inclined plane a simple machine that is a straight, slanted surface
wedge a pair of inclined planes that move
screw an inclined plane wrapped around a cylinder
Created by: dogie
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