For which one of the following does the centre of mass lie outside the body?
A
A fountain pen
B
A cricket ball
C
A ring
D
A book
Correct Answer: A ring
For balancing the weight of ring, you need to put your finger or any solid object inside the ring so that you will be able to sustain their own weight because they are not able to sustain their own weight.so its centre of mass lies outside the body.