Physics · SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

Consider the following statements regarding the centre of mass of regular homogeneous bodies: (A) For a homogeneous thin rod, the centre of mass coincides with its geometric centre. (B) For a homogeneous ring, the centre of mass lies at its geometric centre where no material of the body is present. (C) For a homogeneous sphere, the centre of mass lies at its centre of symmetry. (D) The centre of mass of a homogeneous circular disc lies on its circumference. Choose the correct answer from the options given below:

1. A
   (A), (B) and (C) only
2. B
   (B) and (D) only
3. C
   (A), (B), (C) and (D)
4. D
   (A) and (D) only