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Work and Machines

Across
Occurs when a force causes an object to move in the direction of the force.
A simple machine that consisting of a bar that pivots at a fixed point
An inclined plane that is wrapped in a spiral
The type of work that you do on a machine is called the work
Mechanical ___________ is a comparison of a machine's work output with the work input.
When two kinds of pulleys are used together, a system is called a
The mechanical _________ of a machine compares the input force with the output force.
Unit used to express work
A simple machine that consists of a grooved wheel that holds a rope or cable.
A device that helps make work easier by changing the size or direction of force.
Down
A double inclined plane that moves
A simple machine that consists of a straight, slanted surface.
All machines are constructed from six __________ machines.
A simple machine consisting of two circular objects of different sizes.
The fixed point at which a lever pivots is called a
Machines that are made up of two or more simple machines is called a _________ machine
The unit used to express power
The work done by a machine is called work _______.