Question

Can the centre of gravity be situated outside the material of the body?
$
  {\text{A}}{\text{. yes}} \\
  {\text{B}}{\text{. no}} \\
  {\text{C}}{\text{. can't say}} \\
  {\text{D}}{\text{. None}} \\
$

Answer 1

Hint: To answer this question we have to understand the concept of centre of gravity and then we have to think about materials in which its centre of gravity lies outside the material of the body.

Complete Step-by-Step solution:
So first we have to understand center of gravity:
Center of gravity: It is the point at which the combined mass of the body appears to be concentrated.
As like we can say the centre of gravity of the human body is a hypothetical point around which the force of gravity appears to act.
And because it is a hypothetical point, the centre of gravity need not lie within the physical bounds of an object or person.
So yes it can. We have examples in which the centre of gravity lies outside the material of the body.
In case of a ring, it is situated at the centre of that circle. But the material is only along the circumference. Hence the centre of gravity is situated outside the material of the body.
Hence option A is the correct option.

Note: Whenever we get this type of question the key concept of solving is we have to first understand all the terms used in question, and then take examples in which material lies around circumference and should use regular geometry like a ring.