A C note (f = 128 Hz)is sounded on a piano.If the length of the piano wire is 1.00 m and its mass density is 5.00 g/m,what is the tension in the wire?
A) 84 N
B) 328 N
C) 655 N
D) 1310 N

Question

Quizplus · Accepted Answer

The formula for the tension in a string is T = (mu)f^2L, where mu is the mass density, f is the frequency, and L is the length of the string. 
Plugging in the given values: 
T = (0.005 kg/m)(128 Hz)^2(1.00 m) 
T = 328 N

Therefore, the correct choice is B.

A C Note (F = 128 Hz)is Sounded on a Piano.If