3. A box sits on the floor of an elevator. The box has a mass of 0.25kg and the elevator cab is 900kg. The cable that pulls the elevator vertically upward a distance of 2.4m. During this distance the box has a normal force of SN. 3) What is the work done on the cab by the force from the cable? The cab is then pulled by the cable vertically up a distance of 10.5m. The work done on the cab bv the force from the cable is 92,610J. b} What is the magnitude of Fn on the box in the 10.5m distance the cab is moves