The ratio of the output work to input force is the _ of the machine ?

Answer;

Mechanical advantage

Explanation;Mechanical advantage is the ratio of force output from a machine divided by the force input into the machine.Mechanical advantage measures the machine's force-magnifying effect. It is an advantage gained by using simple machines to accomplish work with less effort.The formula is; M.A = output force/ Input force

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The answer would be a) -80of