I3

This a similar problem from class yesterday. Except- they are holding a 10lb weight in their hand and they have a different joint angle. Before solving the problem: Without the weight, the muscle force was 64 N. What would you expect the muscle force to be after adding the 10lbs? JOINT ANGLE: Person is in 1430 of elbow flexion (62*above the horizontal). 0' is when the arm is full extended The humerus is completely vertical and in the same line as the weight of gravity Arm weighs 2.2 kg and is 35 cm long biceps insert 5cm from axis of rotation and pulls straight up parallel to the humerus The center of gravity is 15 cm from axis of rotation Person is holding a 10lb weight Solve for External Forces : External Moment arm: 62" External Torque Internal Force Internal moment arm Internal Torque Muscle Force