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In the drawing shown, the large wheel has a radius of 7.1 m.A rope is wrapped around the edge of the wheel and a 7.6 kg-box hangs from the rope.A smaller disk of radius 1.38 m is attached to the wheel.A rope is wrapped around the edge of the disk as shown.An axis of rotation passes through the center of the wheel-disk system.What is the value of the mass M that will prevent the wheel from rotating?
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