1.
The centre of mass of a uniform semicircular wire lies
2.
If the net external force acting on a system is zero, then the centre of mass moves with
3.
The moment of inertia of a particle about an axis passing through it is
4.
A body rotates with constant angular velocity. The net external torque acting on it is
5.
A skater spins faster by pulling in her arms because
6.
For rolling without slipping, the kinetic energy is
7.
The SI unit of torque is numerically equal to that of
8.
A ring and a solid disc roll down an incline from the same height. Which reaches the bottom first?
9.
The angular momentum of an isolated system remains
10.
The moment of inertia of a body depends on
11.
A body of moment of inertia 4 kg m2 rotates with angular velocity 5 rad/s. Its angular momentum is
12.
Which of the following has the largest moment of inertia about its central axis for the same mass and radius?
13.
The perpendicular axis theorem is applicable only to
14.
A gymnast performing a somersault increases her angular speed by
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