A crane of mass M = 1.00 104 kg lifts a wrecking ball of mass m = 1200•kg directly upward.
a) Find the magnitude of the normal force exerted on the crane by the ground while the wrecking ball is moving upward at a constant speed of v = 1.00 m/s.
b) Find the magnitude of the normal force if the wrecking ball’s upward motion slows at a constant rate from its initial speed v = 1.00 m/s to a stop over a distance D = 0.250 m.
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