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8th Grade - Simple Machines

Teacher: Mrs. Morey
Force that opposes motion between two touching surfaces
Simple machine made from a grooved wheel with a rope or cable wrapped around a groove
A machine that does work only with one movement
Number of times the input force is multiplied by a machine; equal to the output force divided by the input force
Rate at which work is done; equal to the work done divided by the time it takes to do the work; measured in watts
Force exerted on a machine
Simple machine that is an inclined plane wrapped around a cylinder or post
Simple machine made from two circular objects of different sizes that are attached and rotate together
Is done when a force exerted on an object causes that object to move some distance; equal to force times distance; measured in joules
Equals the output work divided by the input work; expressed as a percentage
Made of separate pieces or parts
Simple machine that is a flat surface, sloped surface, or ramp.
Machine made up of a combination of two or more simple machines
A push or pull
Force exerted by a machine
Simple machine consisting of an inclined plane that moves; can have one or two sloping sides
Simple machine consisting of a rigid rod or plank that pivots or rotates about a fixed point called the fulcrum