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Chapter F2

work force x distance
machine device that changes the amount of force applied to an object
lever simple machine that has an arm that moves around a fixed point
fulcrum fixed point
effort arm part of a lever where a person applies a force
resistance arm part of a lever that applies force on an object
pulley wheel that has a groove along its edge
wheel and axle simple machine in which either a wheel turns on an axle or vice versa
inclined plane any flat, sloping surface
wedge simple machine made up of two or more inclined planes
screw inclined plane wrapped around a cylinder or cone
compound machine device made up of two or more simple machines
efficiency the ratio of work coming out of a machine to the work being put into the machine
Created by: mmargavio