- #1
rbwang1225
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Homework Statement
A string of length L and mass m, hanging an object of mass M from the ceiling. After sending a transverse pulse from the top of the string , how much time we have to wait until the reflected pulse returned to the top?
Homework Equations
The time interval for a transverse pulse to travel the legth of the rope is ##Δt=2\sqrt{\frac{L}{mg}}(\sqrt{M+m}-\sqrt M)##.
The Attempt at a Solution
I think the time for waiting is just twice of Δt, but I still concern that maybe I miss something.
Sincerely.