Question

1. MJ performs a move that he leans forward while keeping his spine straight, using only his feet to prevent him from falling. How much torque is created at the ankle when he leans forward 20° and 45° given that MJ is 5’9” and 136 lb. The height of his center of mass is 56% of his height. How much force must the ankle muscles generate to counteract the torque given that the moment arm of Achilles tendon is 55 mm?

Ankle torque at 20° [A] (Rounding to the nearest integer)
Ankle torque at 45° [B] (Rounding to the nearest integer)
Plantar flexor force at 20° [C] (Rounding to the nearest hundred)
Plantar flexor force at 45° [D] (Rounding to the nearest hundred)

Answer 1