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

• A. 77 m/s
• B. 102 m/s
• C. 110 m/s
• D. 165 m/s

Answer 1

Answer: (C)

110 m/s

Answer 2

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