We will analyze the biceps (M1) and triceps (M2) muscles as they statically hold the lower arm at a 90-degree angle while carrying a mass of 10 kg in the hands. We will assume that d₁ = 12 cm, d₂ = 4 cm, ?1?= 45, ?2?= 20, and the length of the lower arm is 40 cm

Draw and label the free body diagram.

2 01 02 d2 M1 d