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A uniform bar with mass m lies symmetric...


A uniform bar with mass m lies symmetrically across two rapidly rotating fixed rollers, A and B with distance L=2.0 cm between the bar's centre of mass and each roller. The rollers, whose directions of rotation are shown in figures slip against the bar with coefficient of kinetic friction `mu_(k)=0.40`. suppose the bar is displaced horizontally by the distance x as shown in figure and then released. the angular frequency `omega` of the resulting horizontal simple harmonic motion of the bar is (in `rad" "s^(-1)`)

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