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Unformatted text preview: f = v = 10 Hz. The velocity of the portion of string as it crosses the x-axis is Af A t kx A dt t kx dA dt t x dy 2 ) cos( ) sin( ) , ( 0.2 m/s. SOLVING PROBLEM 8 (like 13.15): What is the wave speed on a thin string of mass per unit length 0.001 kg/m suspending a mass of 1 kg? a) 100 m/s; b) 10 m/s; c) 1 m/s; d) 0.1 m/s; e) 0.01 m/s. What do you know? The speed of transverse traveling waves on a string is / T v , where T is the tension and is the mass per unit length. The tension is mg = 10 N. Thus / T v = (10 N/0.001 kg/m) 1/2 = 100 m/s...
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- Spring '04