Mechanical advantage is the ratio of the output force (or effort) to the input force (or effort). It's a measure of how much a machine can amplify the input force.
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IMA = 2 m / 0.5 m = 4
A ramp is used to push a 300 N piano up into a truck. If the mover pushes with 100 N of force along the ramp, what is the AMA? what is the AMA?