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Unit 6 Vocabulary

an inclined plane that changes the direction of an applied force wedge
a device with few, if any, moving parts that makes it easier to do work simple machine
the amount of work done per unit of time power
a grooved wheel that turns by the action of a rope in the groove pulley
the ratio between the work done by a machine and the work put into it efficiency
a simple machine consisting of a bar and a pivot point lever
the number of times a simple machine multiplies an effort force mechanical advantage
what is necessary for a force to move an object through a distance; work is calculated by multiplying the force applied to an object by the distance the object moves work
a simple machine made of an inclined plane wrapped around a central bar that can multiply an effort force screw
the pivot point on a lever fulcrum
a simple machine that consists of a wheel that applies an effort force and a smaller axle that produces an output force wheel and axle
a straight, slanted surface that can multiply an effort force inclined plane
product of the amount of input force and the distance the object moves input work
product of the amount of output force and the distance the object moves output work
fulcrum is located between the effort force and the output force (ex: see-saw, scissors) first class lever
output force is between the effort force and fulcrum (ex: wheel barrow, bottle opener, paper cutter) second class lever
effort force is between the output force and fulcrum (ex: fishing rod, broom, person’s arm) third class lever
when 2 or more simple machines are combined (ex: scissors- lever and the blades are wedges) compound machine
Created by: lindsaystagg123