1. | Four point masses, each of value m, are placed at the corners of a square ABCD, having each side of length L. what is the moment of inertia of this system about an axis passing through A and parallel to the diagonal BD? (a) 3mL2 (b) 2 mL2 (c)  (d) mL 2Answer: (a)
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2. | A thin uniform, circular ring is rolling down an inclined plane of inclination 30° without slipping. Its linear acceleration along the inclined plane will be (CBSE 92) (a) g/2 (b) g/3 (c) g/4 (d) 2g/3 Answer: (a) |
3. | The moment of inertia of a thin circular disc of mass M and radius R about any diameter is (MH-CET 99) (a)  (b)  (c) MR2 (d) 2 MR2 Answer: (a) |
4. | The moment of inertia of a copper disc, rotating about an axis passing through its centre and perpendicular to its plane (a) Increases f its temperature is increased (b) Changes if its axis of rotation is changed (c) Increases if its angular velocity is increased (d) Both (a) and (b) are correct Answer: (d) |
5. | A constant torque of 31.4 N-m is applied to a pivoted wheel. If the angular acceleration of the wheel is 4p rad/s2, then the moment of inertia of the wheel is (a) 1.5 kg m2 (b) 2.5 kg m2 (c) 3.5 kg m2 (d) 4.5 kg m2 Answer: (b) |
6. | A rope is wound round a hollow cylinder of mass 5 kg and radius 0.5 m. what is the angular acceleration of the cylinder if the rope is pulled with a force of 20 N? (a) 4 rad/s2 (b) 5 rad/s2 (c) 6 rad/s2 (d) 8 rad/s2 Answer: (d) |
7. | A solid cylinder of mass 20 kg, has length 1 metre and radius 0.5m. then its momentum of inertia in kg m2 about its geometrical axis is (a) 2.5 (b) 5 (c) 1.5 (d) 3 Answer: (a) |
8. | A wheel rotates with a constant angular acceleration of 2 rad/s2. if the wheel start from rest the number of revolutions it makes in the first ten second will be approximately (MP-PMT 94) (a) 8 (b) 16 (c) 24 (d) 32 Answer: (b) |
9. | The M.I. of a uniform semicircular disc of mass M and radius R about a line perpendicular to the plane of the disc and passing through the centre is (a)  (b)  (c) MR 2 (d)  Answer: (a) |
10. | Dimensions of angular momentum is (MHT-CET-2004) (a) [M1L2T-2] (b) [M-1L-2T-1] (c) [M1L2T-2] (d) [M1L0T-1] Answer: (c) |
