If a machine has a mechanical advantage of 2, and
an ideal mechanical advantage of 4. What is the
efficiency of the machine
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Answer: The mechanical advantage of a machine is 4. ... Mechanical advantage MA is the ratio of output (generated by the machine) force to input (applied to the machine) force. So MA = 4 means that for example if you apply 100 N then your machine will multiply that force and generate 400 N.
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