I submitted this questions a few hours ago but noticed a few numbers were changed, given me a totally different number when what I gotten. Can someone please help me with this question....

Your fitness enthusiast professor is holding her arm in a static position against the resistance presented by the 100N barbell as shown in the figure below.

a. What is the torque produced by the barbell about the center of the elbow?

b. What would happen to the magnitude of the moment arm and torque produced by the barbell if the elbow was flexed an additional 45 degrees (assume the position of the upper arm is fixed)? (Increase, decrease, or stay the same)

c. If the horizontal distance between the center of the elbow joint and the insertion of the elbow flexor is 6cm and the angle of pull of the elbow flexor on the forearm is 70degrees, what is the magnitude of the moment arm for the elbow flexor?

d. Assuming the weight of the forearm is negligible, how much torque must the elbow flexor produce to maintain the forearm position shown in the figure?

e. How much force must be produced by the elbow flexor to maintain the forearm position?

Muscle force 6 cm 35 cm 10ON