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10 terms

work and simple machines

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wedge
an inclined plane that moves
wheel and axle
two circular objects of different sizes that are attached so that they rotate together
screw
an inclined plane wrapped around a cylinder
fulcrum
pivot point of a lever
inclined plane
a flat, sloped surface
work
when a force produces motion in the direction of the force
power
the rate at which work is done
mechanical advantage
the output force divided by the input force
lever
any rigid rod or plank that pivots about a point
pulley
a grooved wheel with a rope or chain that changes the direction of the force