Net torque required to hold the block in equilibrium in a leaning forward posture was calculated. A net joint torque (pin joint constrained) approach to FBD and subsequent calculations was used. In other words we did not calculate a force in a specific muscle at the hip.
a. What additional information would you need to calculate the force in a specific muscle?
b. Assuming that all of the joint torque is either created by the rectus femoris, what specific information would you require in this case to calculate a force in a muscle.
