1.  If I, a and t are the moment of inertia, angular acceleration and torque respectively of a body rotating about any axis with angular velocity w, then (CPMT 82) (a) t = Ia (b) t = Iw (c) I = tw (d) a = Iw Answer: (a)

2.  The moment of inertia of a circular ring about an axis passing through its centre and normal to its plane is 200 gm ´ cm^{2}. then its moment of inertia about a diameter is (PMT 87 MP) (a) 400 gm ´ cm^{2} (b) 300 gm ´ cm^{2} (c) 200 gm ´ cm^{2} (d) 100 gm ´ cm^{2} Answer: (d) 
3.  Two particles A and B, initially at rest, moves towards each other under a mutual force of attraction. At the instant when the speed of A is u and the speed of B is 2 u, the speed of centre of mass is, (IIT 82) (a) Zero (b) u (c) 1.5 u (d) 3 u Answer: (a) 
4.  A body of M.I. 3 kg m^{2} rotating with an angular velocity 2 rad/s has the same K.E. as a mass of 12 kg moving with a velocity of (MHCET 99) (a) 1 m/s (b) 2 m/s (c) 4 m/s (d) 8 m/s Answer: (a) 
5.  Moment of inertia of a disc about the tangent parallel to its plane is I. The moment of inertia of the disc tangent and perpendicular to its plane is (MHCET 2005) (a) _{} (b) _{} (c) _{} (d) _{} Answer: (d) 
6.  The moment of inertia of a disc about its geometrical axis is I. then its M.I. about its diameter will be (a) I (b) 2I (c) _{} (d) _{} Answer: (c) 
7.  A particle moves for 20 s with velocity 3 m/s and then moves with velocity 4 m/s for another 20 s and finally moves with velocity 5 m/s for next 20 s. what is the average velocity of the particle? (MHTCET2004) (a) 3 m/s (b) 4 m/s (c) 5 m/s (d) Zero Answer: (b) 
8.  The term moment of momentum is called (C.P.M.T.74, MHCET 99) (a) Momentum (b) Force (c) Torque (d) Angular momentum Answer: (d) 
9.  When a mass is rotating in a plane about a fixed point its angular momentum is directed along. (NCERT 82, MNR 87, MP 86) (a) The radius (b) The tangent to orbit (c) The line at an angle of 45° to the plane of rotation (d) The axis of rotation Answer: (d) 
10.  A mass M is moving with a constant velocity parallel to the Xaxis. Its angular momentum with respect to the origin (a) Is zero (b) Remains constant (c) Goes on increasing (d) Goes on decreasing Answer: (b) 