The efficiency of a machine describes how much of the power put into the machine is turned into movement or force. A 100% efficient machine would turn all of the input power into output movement or force. However, no machine is 100% efficient due to friction, heat, wear and other imperfections that consume input power without delivering any output.
The measure of how much of the power put into a machine is turned into movement or force is called:
efficiency |
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mechanical advantage |
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power |
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force multiplication |