3. Calculate: When a force is exerted over a distance, work is done on an object. Work is measured in joules \( (\mathrm{J}) \) and is equal to the product of force and distance: \( W=F \cdot d \). For each pulley system, calculate the input work (input force \( \cdot \) input distance) and the output work (output force \( \cdot \) height). Units of work are newton-meters, or joules (J). \begin{tabular}{|c|c|c|} \hline Pulley system