Q4/ A skeletal diagram of a hand holding a D load is shown in the upper figure. If the load and the forearm have masses of 2 kg and 1.2 kg, respectively, and their centers of mass are located at Gl and G2 , determine the force developed in the biceps CD and the horizontal and vertical components of reaction at the G2 elbow joint B. The forearm supporting system D can be modeled as the structural system shown in the lower figure. 75° B A -100 mm- |G2 -135 mm- 65 mml

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