A particle of mass m is projected at an angle of 60o with a velocity of 20 m/s relative to the ground from a plank of same mass m which is placed on a smooth surface initially plank was at rest. The minimum length of the plank for which the ball will fall on the plank itself is (a) 40√3 (b) 20√3m (c) 10√3m (d) 60√3m

Amit Saxena , 11 Years ago

Grade upto college level