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An inclined plane making an angle 30^@ w...

An inclined plane making an angle `30^@` with the horizontal is placed in a uniform horizontal electric field of `100Vm^(-1)` as shown below. A particle of mass 1 kg and charge 0.01 C is allowed to slide down from rest from a height of 1 m. If the coefficient of friction is 0.2, find the time it will take the particle to reach the bottom.

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