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A 1.5-lb ball that can slide on a horizontal frictionless surface is attached to a fixed Point O by means of an elastic cord of constant k = 1 lb/in and un-deformed length 2 ft. The ball is placed at Point A, 3 ft from O, and given an initial velocity v0 perpendicular to OA, allowing the ball to come within a distance d = 9in of Point O after the cord has become slack.
Determine
(a) The initial speed v0 of the ball,
(b) Its maximum speed. |
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