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a ball of mass m is attached by two strings to a vertical rod (lower string is at a right angle to rod). the entire system rotates at a constant angular velocity w about the axis of the rod.
A) assuming w is large enough to keep both strings taut, find the force each string exerts on the ball in terms of w, m, g, R, and theta.
B) find the minimum angular velocity, w(min) for which the lower string barely remains taut

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