Q. Assertion : The centre of mass of a two particle system lies on the line joining the two particles, being closer to the heavier particle.
Reason : Product of mass of one particle and its distance from centre of mass is numerically equal to product of mass of other particle and its distance from centre of mass.

 2001  164 System of Particles and Rotational Motion Report Error

Solution:

Correct answer is (a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.