1. The unit of the radius of gyration is –
- Kg m²
- m
- Kg
- Kg m
2. A couple produces –
- Only linear motion
- Only rotational motion
- Linear and rotational motion both
- No motion
3. The center of mass of a body –
- Lies always at the geometrical center
- Lies always inside the body
- Lies always outside the body
- May lie within or outside the body
4. Moment of linear-momentum is-
- Couple
- Angular-momentum
- Impulse
- Torque
5. S. I. unit of moment of inertia is –
- Kgm
- Kgm⁻¹
- Kgm²
- Kgm⁻²
6. Radius of gyration of a body depends upon –
- axis of rotation
- translational motion
- the shape of the body
- area of the body
7. The unit of the Torque is –
- N
- Nm²
- Nm
- None of these.
8. The center of mass of a system of particles does not depend on –
- Masses of the particles
- Forces on the particles
- Position of the particles
- The Relative distance between the particles
9. Angular momentum is –
- Axial vector
- Scalar
- Polar vector
- None of these
10. Analogue of mass in rotational motion is –
- moment of inertia
- torque
- radius of gyration
- angular momentum
11. Unit of angular momentum is-
- N-m
- Kg.m/s²
- Kg.m/s
- Kg²m/s²
12. The moment of inertia of a body does not depend upon-
- Axis of rotation
- Mass
- Distribution of mass
- Angular velocity
13. A shell at rest explodes. The center of mass of the fragments-
- Moves along a particle path
- Moves along an elliptical path
- Moves along a straight line
- Remains at rest.