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A ring of radius R having uniformly dist...

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 co. Find the maximum value of co h which the ring can be rotated if the strings can withstand a maximum tension of `(3T_0)/2`

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`T_0 = (omega QBR^2)/(D) or omega = (DT_0)/(QBR^2)`
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