First slide

Speed of wave

Question

A string of 7 m length has a mass of 0.035 kg. If tension in the string is 60.5 N, then speed of a wave on the string is

Moderate

A

77 m/s
B

102 m/s
C

110 m/s
D

165 m/s

Solution

$v = \sqrt{\frac{T}{m}} \Rightarrow v = \sqrt{\frac{60.5}{(\frac{0.035}{7})}} = 110 m / s$

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