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1. A hand exerts a force of 90N on a scale at 32 cm from the joint centre at the elbow. The triceps attach

1. A hand exerts a force of 90N on a scale at 32 cm from the joint centre at the elbow. The triceps attach to the ulna at a 90 angle and at a distance of 3cm from the elbow joint centre and the weight of the forearm and hand is 40N with its segmental centre of mass 17cm from the elbow. How much force is being exerted by the triceps?

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