Question: A sphere of mass M is supported by a string that passes over a light horizontal rod of length L (Fig. P18.29). Given that the

A sphere of mass M is supported by a string that passes over a light horizontal rod of length L (Fig. P18.29). Given that the angle is / and that f represents the fundamental frequency of standing waves in the portion of the string above the rod, determine the mass of this portion of the string.

Figure P18.29

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