A coast guard rescue swimmer finds that he must hold onto a survivor of a sinking ship. Without the help of a rescue line or a basket, the swimmer holds onto the survivor with one hand while holding onto the helicopter's landing gear with the other hand. If the swimmer has a mass of 45.9kg (Fswimmer = 450N) and the survivor has a mass of 35.7 kg (Fsurvivor = 350N), (a) find the force exerted by the swimmer's arm holding the helicopter and (b) find the force exerted by the arm holding the survivor.