Question

A system consists of masses $M$ and $m$ (<< $M$). The centre of mass of the system is

• A. at the middle.
• B. nearer to $M$.
• C. nearer to $m$.
• D. at the position of larger mass.

Answer 1

The correct option is B nearer to $M$.

$\because$ Distribution of mass is more towards $M(m<<M$)
$\Rightarrow$Centre of mass will be farther from $m$
$\Rightarrow r_1>r_2$
So, centre of mass will be closer to $M$