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:
1. (a, c)
2. (a, d)
3. (d) only
4. (c, d)
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