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A ring of linear mass density and radius R is rotated about its axis passing through its centre and perpendicular to plane of ring with constant angular speed ‘ ’. The tension in the ring is
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Correct option is A
Consider an element of length (Δl).2Tsinθ=(2λ)(Δl)⋅ω2R2T⋅(Δl)2R=(2λ)(Δl)(ω2)(R)T=(2λω2R2)
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A rectangular plank of mass 'm1' and height 'a' is on a horizontal surface. On the top of it another rectangular plank of mass 'm2' and height 'b' is placed. The potential energy of the system is,
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