I have this problem due tomorrow, well technically today, and I'm having trouble with it. It askes...(adsbygoogle = window.adsbygoogle || []).push({});

A rope of total mass m and length L is suspended vertically with mass M at the end. Show that the time for a transverse wave to travel the length of the rope is...

t = 2[squ](L / mg)*[[squ](M+m) - [squ](M)]

I start out with t = L/v

where v = [squ](T/[mu]) T being tension and [mu] being mass per unit length

So, t = L/[squ](TL/m)

Thats as far as I got :(

The book hints to find an expression for the wave speed at any point a distance x from the lower end by considering the tension in the rope as resulting from the weight of the segment below that point. But i dont know how to turn that into an equation :(

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Oh no, I need serious help!

**Physics Forums | Science Articles, Homework Help, Discussion**