- #1

BOYLANATOR

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## Homework Statement

A pulse takes 0.1s to travel the length of a string. The tension in the string is provided by passing the string over a pulley to a weight which has 100 times the mass of the string.

What is the length (L) of the string?

What is the equation of the third normal mode.

## Homework Equations

v=√(F/u) u=m/L

## The Attempt at a Solution

We have L/t = √(100.m.g/(m/L) where g = surface gravity

So 100L^2 = 100gL

so L= magnitude(g) = 9.8 m

This type of question was not covered directly in our notes and I am unsure if my working is correct.

Thanks for any help.