Ra body is moving down a long inclined plane of angle of inclination 0. the coefficient of friction between the body and the plane varies as u = 0.5 x, where x

RA body is moving down a long inclined plane of angle of inclination 0. The coefficient of friction between the body and the plane varies as u = 0.5 x, where x is the distance moved down the plane. The body will have the maximum velocity when it has travelled a distance x given by (a) x = 2 tan 6 2 (6) x = tan 6 (c)r = 2 cot 2 (d) x = cot 6