Recent content by physicshurts

Im still not sure how to set it up though? How do I find the force exerted by the muscle? Do I need to find torque again?

Homework Statement The figure shows an outstretched arm with a mass (m1) of 4.4 kg. The arm is 56 cm long, and its center of gravity is 21 cm from the shoulder. The hand at the end of the arm holds a 6.0-kg mass (m2). (so its a man holding a dumbell, and his arm is 15 degrees up from the...