A person of mass 7 kg is standing on the tiptoes of both feet. The heel is lifted just above the ground, so the foot can be treated as horizontal. There are three forces acting on each foot, the upward vertical force N exerted on the floor on the toes, the downward vertical force F2 exerted by the leg bonde (tibia) on the ankle (talus), and the upward vertical force F3 exerted by the Achilles tendon on the heel. The distance from the toes to the ankle is 12.5 cm and the distance from the ankle to the heel is 6.5 cm. (a) Draw a free body diagram for the foot, showing the relevant forces and distances. (b) Applying the condition of force equilibrium, find the magnitudes of F2 and F3