Physics · SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

Under what condition does the centre of gravity of a body coincide precisely with its centre of mass?

1. A
   When the gravitational field \( \mathbf{g} \) is uniform throughout the extension of the body
2. B
   Only if the body is in free space without any gravitational field
3. C
   Only if the body is spherical and homogeneous
4. D
   When the body rotates at a constant angular velocity about a fixed axis