question_answer

An inclined plane making an angle of \[30{}^\circ \] with the horizontal is placed in a uniform electric field of intensity 100 V/m. A particle of mass 1 kg and charge 0.01 C is allowed to slide down from rest on the plane from a height of 1 m. If the coefficient of friction is 0.2, then find the time taken (in second) by the particle to reach the bottom.

Answer:

1.319