A thin, 77.0-cm wire has a mass of 16.1 g. One end is tied to a nail, and the ot

Question

A thin, 77.0-cm wire has a mass of 16.1 g. One end is tied to a nail, and the other end is attached to a screw that can be adjusted to vary the tension in the wire.

Part A: To what tension (in newtons) must you adjust the screw so that a transverse wave of wavelength 3.33 cm makes 872 vibrations per second?
T= ___?__ N

Part B: How fast would this wave travel?
v= ___?___ m/s

The answer is not The formula to use here is
f = 1/2L vF/µ
µ = m/L = (.0161/.77) = .021 kg/m2
872 = 1/[(2)(.77)] vF/.021
F = 3.79 X 10^4 N. This is the tension in the string

v = v(F/µ)
v = v[(3.79 X 104)/.021]
v = 1.34 X 10^3 m/s

Explanation / Answer

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