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The matallic bob of a simple pendulum of...

The matallic bob of a simple pendulum of mass 0.5 kg carries a positive charge of 0.25 C .If the pendu-lum is suspended in an electric fielf of strength `15 N C^(-1)` directed from east to west, state the forces acting on the bob and derive the condition for equilibrium. Also find the angle subtended at the equilibrium.
(Take `g = 10 ms^(-2)`)

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