Answer:
The mechanical advantage (MA) of a machine is the ratio of the output force to the input force. In this case, the output force is 50.0 N and the input force is 12.5 N, so we can use the formula:
MA = output force / input force
MA = 50.0 N / 12.5 N
MA = 4
Therefore, the actual mechanical advantage of the nutcracker is 4