SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

 

1. The unit of the radius of gyration is –

2. A couple produces –

  • Only linear motion
  • Only rotational motion
  • Linear and rotational motion both
  • No motion

View Answer

Only rotational 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

View Answer

May lie within or outside the body

4. Moment of linear-momentum is-

  • Couple
  • Angular-momentum
  • Impulse
  • Torque

View Answer

Angular-momentum

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

View Answer

axis of rotation

7. The unit of the Torque is –

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

View Answer

Forces on the particles

9. Angular momentum is –

10. Analogue of mass in rotational motion is –

View Answer

moment of inertia

11. Unit of angular momentum is-

12. The moment of inertia of a body does not depend upon-

View Answer

Angular velocity

13. A shell at rest explodes. The center of mass of the fragments-

View Answer

Remains at rest.