An equilateral triangular frame is made ...

An equilateral triangular frame is made of three thin massless rods. Three point masses of mass m each are fixed at vertices of the frame as shown. The system is rotated with uniform angular speed `omega` about a fixed axis passing through A and normal to the plane of triangular frame. Neglect the effect of gravity. The tension in rod connecting mass B and C is

`m omega^2 l`

`(m omega^2l)/(2)`

`(sqrt3)/(2) m omega^(2)l`

zero

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