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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A non-conducting ring of mass m and radius r is lying at rest in the vertical XY plane on a smooth non conducting horizontal XZ plane. Charge +q and –q are distributed uniformly on the ring. On the two sides of the vertical diameter of the ring. A constant and uniform electric field E  is set up along the x-direction. The ring is given a small rotation about the vertical diameter of the ring and released. Find the period of oscillation of the ring.?

A non-conducting ring of mass m and radius r is lying at rest in the vertical XY plane on a smooth non conducting horizontal XZ plane. Charge +q and –q are distributed uniformly on the ring. On the two sides of the vertical diameter of the ring. A constant and uniform electric field E  is set up along the x-direction. The ring is given a small rotation about the vertical diameter of the ring and released. Find the period of oscillation of the ring.?

and the other (ball 1) is free. The balls are charged identically as a result of which the spring length increases η=2 times. Determine the change in frequency. Two small identical balls lying on a horizontal plane are connected by a weightless spring. One ball (ball 2) is fixed at O