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A simple pendulum with a bob of mass m =...

A simple pendulum with a bob of mass `m = 1` kg, charge `q = 5muC` and string length imis given a horizontal velocity a in a uniform electric field `E = 2 xx 10^6 V/m` at its bottommost point A, as shown in figure. It is given that the speed a is such that the particle leaves the circle at point C. Find the speed a (Take `g = 10 m/ s^2`)

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