For which of the following does the centre of mass lie outside the body?
(a) A pencil
(b) A shotput
(c) A dice
(d) A bangle
The answer is the option (d) A Bangle.
The centre of mass of a pencil, a shot put a bangle and a dice all lie at their centre. Since pencil, shot put and dice are solid objects their centre of mass lies within the body. For a bangle, the centre of mass is at its centre, but since it is hollow from inside, it lies outside the bangle.