What is the frequency of small oscillations for a bar hanging on two cords?

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AI Thread Summary
The discussion focuses on determining the frequency of small oscillations for a bar suspended by two cords. The approach suggested involves treating the system like a physical pendulum, despite the complexity introduced by the dual cord setup. A small displacement leads to the calculation of the restoring force using small-angle approximations. The need for additional information, such as the lengths of the cords or the distance from the bar's center to the pivot, is highlighted as crucial for solving the problem accurately. Understanding the dynamics of this system is essential for deriving the correct oscillation frequency.
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Homework Statement


A bar of length L is hanged by two cords(on the two edges of the bar) of length l in 1 pivot. What´s the frequency of small oscillations arond the stable position


Homework Equations


T=2\pi\sqrt{\Theta/mgd}


The Attempt at a Solution


I would try to solve it as a physics pendulum, but I am not sure that is it a physics pendulum, because its hanging on two cords, and before this there was always only 1 cord.
 
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Displace the bar by a small amount and compute the restoring force f, making the usual small-angle assumption(s) for the angle θ between the vertical and a line drawn from the c.m. to the pivot. Then solve f(θ) = ma(θ) as usual.

BTW the problem should also have given the lengths of the two supporting cords, or the distance from the bar's center to the pivot point.
 

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