Question

The centre of mass of an extended body on the surface of the earth and its centre of gravity
A. are always at the point for any size of the body.
B. are always at the same point only for spherical bodies.
C. can never be at the same point.
D. is close to each other for objects, say of sizes less than `100 m`.

Answer 1

Correct Answer - D
Centre of mass is very close with the centre of gravity of a body if size of the body is very very small as compared to size of the earth. Thus only option (d) is correct.