The Achilles tendon is attached to the rear of the foot as shown in (Figure) . A person elevates himself just barely off the floor on the "ball of one foot." Assume the person has a mass of 76 kg and D is twice as long as d.
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1. Find the tension FT in the Achilles tendon (pulling upward).
2. Find the (downward) force FB exerted by the lower leg bone on the foot.