(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 1740-N irregular beam is hanging horizontally by its ends from the ceiling by two vertical wires (A and B), each 1.30 m long and weighing 2.80 N. The center of gravity of this beam is one-third of the way along the beam from the end where wire A is attached.

If you pluck both strings at the same time at the beam, what is the time delay between the arrival of the two pulses at the ceiling? (what is delta t)

2. Relevant equations

ok,

wave speed = T/mass per length

Summation of Torque= -rbwb + rsTb = 0

Tb = rcomWb/(length of string)

3. The attempt at a solution

So, first of all what is the radius of the center of mass, like how would I find it? After I get the Tension in string b, then how would I solve the problem? Any guidance would be helpful..Thanks..

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# Homework Help: Beam attached to ceiling

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