NEET Physics Rolling Motion MCQs Set A

a)

b)

c) ma

d) 2 ma

Answer:

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: solid sphere

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:  19.6 J

Question:

a) 10 m/s

b) 15 m/s

c) 18 m/s

d) 12 m/s

Answer:  10 m/s

Question:   The acceleration of a disc (mass ‘m’ and radius ‘R’) rolling down an incline of angle ‘q’ without slipping is

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d) None of these

Answer:

Question:   A ball rolls without slipping. The radius of gyration of the ball about an axis passing through its centre of mass is K. If radius of the ball be R, then the fraction of total energy associated with its rotational energy will be

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d)

Answer:

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: constant in magnitude as well as direction.

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:  7.1 m

More Questions.....................................

Question:   A hollow smooth uniform sphere A of mass m rolls without sliding on a smooth horizontal surface. It collides head on elastically with another stationary smooth solid sphere B of the same mass m and same radius. The ratio of kinetic energy of B to that of A just after the collision is

a) 3 : 2

b) 1 : 1

c) 2 : 3

d) None of these

Answer: 3 : 2

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: solid sphere reaches the bottom first

Question:   A solid cylinder of mass m & radius R rolls down inclined plane without slipping. The speed of its C.M. when it reaches the bottom is

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d) 1

Answer:

Question:  A tangential force of 20 N is applied on a cylinder of mass 4 kg and moment of inertia 0.02 kg m2 about its own axis. If the cylinder rolls without slipping, then linear acceleration of its centre of mass will be

a) 6.7 m/s²

b) 10 m/s²

c) 3.3 m/s²

d) None of these

Answer: 6.7 m/s²

Question:  A toy car rolls down the inclined plane as shown in the fig. It loops at the bottom. What is the relation between H and h?

a)

b)

c)

d)

Answer:

Question:

a) 2 rad/sec

b) 4 rad/sec

c) 6 rad/sec

d) 10 rad/sec

Answer:  2 rad/sec

Question:

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:  Two identical uniform solid spherical ball A and B of mass m each are placed on a the fixed wedge as shown in figure. Ball B is kept at rest and it is released just before two ball collides. Ball A rolls down without slipping on inclined plane and collide elastically with ball B. The kinetic energy of ball A just after the collision with B is :

a)

b)

c)

d)

Answer: