Twang!
Classical Mechanics
Level
4
A weight of mass M is hanging from a string. The string has length \(\ell\); its mass m is uniformly distributed.
A small disturbance of the hanging mass M causes a transverse pulse wave to travel up the string. The time it takes for this pulse to reach the top of the string can be written as \[t = c\sqrt{\frac{\ell}{g}},\] where c is a dimensionless number. What is the correct expression for c?
by
Arjen Vreugdenhil