A person is standing still on a horizontal surface. They are holding a dumbbell weighing 10 kg in their right hand, with their arm extended horizontally. The person's mass is 70 kg. Assume that the force due to gravity acts at the center of mass of the person, which is located 1 meter above the ground and directly above the midpoint of their feet. The center of mass of the dumbbell is 0.5 meters from the shoulder joint (the point where the arm is attached to the body). Draw a free body diagram for the person and the dumbbell.  Identify all the forces acting on the person. Calculate the torque about the feet caused by the weight of the person and the dumbbell.

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