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Work and Machines

Unit 14 Acellus Physical Science

TermDefinition
work when an object moves a distance due to a specific force
machine a device that can make work easier
compound machine a device made of two or more simple machines
lever a bar that pivots around a central point called a fulcrum
inclined plane a flat surface that slopes
wedge two inclined planes put back to back
screw inclined plane wrapped around a post
wheel and axle two circles that orbit about an axis
pulley a grooved wheel with a cable wrapped around it
mechanical advantage number of times a machine multiplies the effort force
input force force put into a machine, the effort force
output force the force the machine exerts on an object
resistance force the force that opposes effort
Created by: Coleen Brennen
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