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A rigid bent light rod of total length 2...

A rigid bent light rod of total length 2l can slide on fixed wire frame with the help of frictionless sliders. There is thin liquid film (surface tension T) between bent rod and wire frame. In equilibrium the elongation in spring is given by `((4T l alpha)/(5K))`. then find the value of `alpha`.

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`2(2Tl) cos 53^(@)=Kx`
`(4Tl 3)/(5K)=x`
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