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Unit 2

Work,Energy, and Machines Lessons 1, 2, and 3

TermDefinition
work use of force to move an object some distance in the direction of force
energy ability to do work
power rate at which work is done
kinetic energy energy of motion
potential energy energy an object has because of its position, condition, or chemical composition
mechanical energy energy possessed by an object due to its motion and position
machine any device used to make work easier
mechanical advantage the number of times the machine multiplies the input force
mechanical efficiency comparison of machines work output with the work input
lever simple machine that has a bar that pivots at a fixed point
fulcrum the fixed point
wheel and axle simple machine made of a wheel connected to a smaller cylinder object, the axle
pulley simple machine that has a grooved wheel that holds a rope or a cable
inclined plane simple machine that has a straight, slanted surface.
Created by: 18sculline1111
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