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Chapter 8

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Across
1.An inclined plane that is wrapped in a spiral around a cylinder
5.The transfer of energy to an object
7.The number of times the machine multiplies force
9.A simple machine that has a grooved wheel that holds a rope or a cable
10.The unit used to express work
11.A device that makes work easier by changing size or direction of force
13.A simple machine consisting of two circular objects of different sizes
14.Joules divided by seconds
16.A simple machine that has a bar that pivots at a fixed point
Down
2.The work done on a machine
3.The comparison of a machine’s work output with the work input
4.A pair of inclined planes that move
6.A simple machine that has a straight, slanted surface
8.Machines that are made of two or more simple machines
12.The fixed point in a lever
13.The work that is done by the machine
15.Rate at which energy is is transferred

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