Mechanical advantage is the ratio of the distance input and the distance output.
MA = li/lo
Consider the nail puller shown in the figure.
(a) What is the mechanical advantage of a nail puller where you exert a force 46.5 cm from the pivot and the nail is 1.5 cm on the other side?
(b) what minimum force must you exert to apply a force of 1050 N to the nail?
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