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System of Particles and Rotational Motion

Physics · Class 11 · CBSE

PhysicsClass 11CBSEMedium
Q1/15
45s

A rigid body is in rotational equilibrium when:

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All 15 questions in this quiz

  1. The centre of mass of a uniform circular ring is located at:

    1. Any point on the ring
    2. Centre of the ring
    3. Outer edge
    4. Depends on radius

  2. When a skater pulls his arms inward while spinning, his angular velocity:

    1. Decreases
    2. Increases
    3. Remains constant
    4. Becomes zero

  3. The perpendicular axis theorem is applicable to:

    1. Three-dimensional bodies
    2. Plane lamina
    3. Point masses only
    4. Liquids

  4. The theorem used to calculate moment of inertia about an axis parallel to an axis through the centre of mass is:

    1. Parallel axis theorem
    2. Perpendicular axis theorem
    3. Conservation theorem
    4. Work-energy theorem

  5. The angular velocity of a rotating body is measured in:

    1. m/s
    2. rad/s
    3. N/m
    4. kg/s

  6. A rigid body is in rotational equilibrium when:

    1. Net torque is zero
    2. Net force is zero only
    3. Velocity is maximum
    4. Acceleration is maximum

  7. The rotational analogue of mass is:

    1. Force
    2. Torque
    3. Moment of inertia
    4. Angular velocity

  8. Angular momentum of a rotating body is given by:

    1. L = mv
    2. L = Iω
    3. L = ma
    4. L = Fr

  9. Torque is the rotational equivalent of:

    1. Force
    2. Momentum
    3. Energy
    4. Velocity

  10. The SI unit of moment of inertia is:

    1. kg m
    2. kg m²
    3. N m
    4. kg/m²

  11. The moment of inertia of a body depends on:

    1. Mass and velocity
    2. Mass distribution and axis of rotation
    3. Force and acceleration
    4. Temperature only

  12. The total linear momentum of an isolated system remains constant due to:

    1. Conservation of energy
    2. Conservation of angular momentum
    3. Conservation of momentum
    4. Newton's third law only

  13. The linear momentum of a particle is given by:

    1. p = mv
    2. p = ma
    3. p = m/v
    4. p = v/m

  14. The position of the centre of mass depends on:

    1. Only total mass
    2. Distribution of mass in the system
    3. External forces only
    4. Acceleration of particles only

  15. The centre of mass of a system of particles is the point where:

    1. Entire mass of the system is concentrated
    2. Gravitational force is maximum
    3. Total momentum of the system becomes zero
    4. No external force acts