The centre of mass of an extended body on the surface of the earth and its centre of gravity:
| (a) | are always at the same 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. |
| (e) | both can change if the object is taken deep inside the earth. |
Choose the correct alternatives:
