A 50.0-lb sphere A of radius 4.50 in. moving with a velocity of magnitude v0 = 6.00 ft/s strikes a 4.60-lb sphere B of radius 2.00 in. which is hanging from an inextensible cord and is initially at rest. Knowing that sphere B swings to a maximum height h = 0.75 ft, determine the coefficient of restitution between the two spheres.



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