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In the figure, a 1.68 kg ball is connected by means of two massless strings, each...

In the figure, a 1.68 kg ball is connected by means of two massless strings, each of length L = 1.86 m, to a vertical, rotating rod. The strings are tied to the rod with separation d = 1.86 m and are taut. The tension in the upper string is 52.0 N. What are (a) the tension in the lower string, (b) the magnitude of the net force on the ball, and (c) the speed of the ball?

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