13-78. A spring, having an unstretched length of 2 ft. has
Chapter 13, Problem 13-78(choose chapter or problem)
13-78. A spring, having an unstretched length of 2 ft. has one end attached to the 10-lb ball. Determine the angle 0 of the spring if the ball has a speed of 6 fl/s tangent to the horizontal circular path.
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