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A 1.50-m string of weight 0.0125 N is tied to the ceiling at its upper end,...

A 1.50-m string of weight 0.0125 N is tied to the ceiling at its upper end, and the lower end supports a weight ?. (Ignore the very small variation in tension along the length of the string that is produced by the weight of the string.) When you pluck the string slightly, you notice that the waves traveling up the string have amplitude 8.00 mm, wavelength 0.040 m and speed 12.0 m/s.

Assuming that up is the positive direction, which of the following is the correct equation that describes the wave?

What is the maximum speed of oscillation of a point on the string located 0.50 m above the weight ??

What is the weight, ??

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