Q1: Draw a free body diagram for the forearm in the two situations. Label forces. Define axes and positive and negative rotation directions.

Q2: Use rotational equalibrium to calculate muscle tensions for both of these situations:
a. choose and justify a rotational axis
b. write an equation for the sum of torques on the forearm
c. solve for size and direction of the indicated muscle tensions
d. explain what you have done in your own words

Q3: Use linear equalibrium to determine vertical forces on the elbow joint in both cases.

Q4: Interpret your findings. What can be learned from static equilibria calculations applied to forearm musculature and anaotomy?