A ring of radius R having uniformly distributed charge Q is mounted on a rod suspended by two ide...

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A ring of radius R having uniformly distributed charge Q is mounted on a rod suspended by two identical strings. The tension in strings in equilibrium is T_0. Now, a vertical magnetic field is switched on and ring is rotated at constant angular velocity ω. Find the maximum ω with which the ring can be rotated if the strings can withstand a maximum tension of 3 T_0 / 2
(2003,4 M)
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