NEET Physics Rolling Motion MCQs Set 01

Question.  A body rolls down an inclined plane. If its kinetic energy of rotation is 40% of its kinetic energy of translation motion, then the body is
(a) solid sphere
(b) ring
(c) solid disc
(d) hollow cylinder

Answer: A

Question.  A solid cylinder of mass 2 kg and radius 0.1 m rolls down an inclined plane of height 3m without slipping. Its rotational kinetic energy when it reaches the foot of the plane would be
(a) 19.6 J
(b) 10.2 J
(c) 9.8 J
(d) 22.7 J

Answer: A

Question.  A circular disc of radius R rolls without slipping along the horizontal surface with constant velocity v₀. We consider a point A on the surface of the disc, then the acceleration of the point A is
(a) constant in magnitude as well as direction.
(b) constant in direction
(c) constant in magnitude
(d) cannot say

Answer: A

Question.  A solid sphere of mass 2 kg rolls on a smooth horizontal surface at 10 m/s. It then rolls up a smooth inclined plane of inclination 30° with the horizontal. The height attained by the sphere before it stops is
(a) 7.1 m
(b) None of these
(c) 700 cm
(d) 701 cm

Answer: A

Question.  A solid sphere, disc and solid cylinder all of the same mass and made of the same material are allowed to roll down (from rest) on an inclined plane, then
(a) solid sphere reaches the bottom first
(b) solid sphere reaches the bottom last
(c) all reach the bottom at the same time
(d) disc will reach the bottom first

Answer: A