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simple machines


tools that make it easier to move objects

It’s easier to move objects with the help of simple machines.

simple machines

Pulley


a simple machine that is made of a grooved wheel and cable

A crane has a pulley to help raise and lower objects.

Pulley

inclined plane


a slanted surface, like a ramp, that makes it easier to move objects up and down

An inclined plane makes it easier to load a box onto a truck.

  inclined plane

gravity


a force that pulls two objects toward each other

Gravity pulls this roller coaster toward the ground.

gravity

wheel and axle


a circle and post that rotate together

A fan’s wheel and axle allows it to spin.

wheel and axle
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