With respect to centre of gravity, which of the following statements are correct?

1. The position of centre of gravity depends on its shape.
2. It is not necessary that the centre of gravity of a body should always be within the material of the body.
3. A body of weight W can be considered as a point particle of weight W at its centre of gravity.
4. All of the above

The centre of gravity of a body is the point about which the algebraic sum of moments of weights of all the particles constituting the body is:

1. 1
2. > 1
3. < 1
4. 0

Where should the centre of gravity of a body be located for stable equilibrium?

1. above the base
2. near the geometric centre
3. can be anywhere
4. both (1) and (2)

Two objects have the same mass but different shapes. Which object would have a higher centre of gravity?

1. the one with a larger base
2. the one with a smaller base
3. both would have the same centre of gravity
4. it depends on the material of the object.