The arm drawn in Fig. 5-16 supports a 4.0-kg sphere. The mass of the hand and forearm together is 3.0 kg and its weight acts at a point 15 cm from the elbow. Assuming all the forces are vertical, determine the force exerted by the biceps muscle.

Transcribed Image Text:

4.5 cm FB 15 cm Triceps Biceps Radius Ulna c.g. 38 cm Fig. 5-16 c.g.