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A disc of radius R and mass M having a point charge -Q at the centre is kept on a plane. At a distance ‘l’ vertically above from the centre of the disc, another charge +Q is kept. The disc is slightly displaced in the horizontal direction. It rolls without slipping. For every small displacement, find the time period of oscillation. Answer : (2π√6πεMl³)/Q

A disc of radius R and mass M having a point charge -Q at the centre is kept on a plane. At a distance ‘l’ vertically above from the centre of the disc, another charge +Q is kept. The disc is slightly displaced in the horizontal direction. It rolls without slipping. For every small displacement, find the time period of oscillation.
 
Answer : (2π√6πεMl³)/Q

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Grade:12

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