# Physics

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A guitar string, destined to be an upper E string, has length 100 cm and mass 0.400 g.
a. What is its mass per unit length?
u = m/L = 0.004 g/cm

b. What length of this string should be used on a guitar if the fundamental frequency is to be 330 Hz and its tension is to be 100 N?

I'm not sure which equations to use for part B.

• Physics -

Nick,

I'm working on this one myself. You can deduce from V = sqrt (T/M) where M=mass/length that f*2L = sqrt (T/M) but I keep getting the wrong answer for L. Unit conversion maybe?

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