If the Earth were three times farther from the Sun than it is now, the gravitational force exerted on Earth by the sun would be:
Correct answer: C. One-ninth times
- A. Three times
- B. Nine times
- C. One-ninth times
- D. One-third times
Explanation
The correct option is: C) One-ninth times The gravitational force (f) is given by GMm/r 2 . In this case, if the Earth were three times farther from the Sun, the new distance (r') would be three times the original distance. So F' will be GMm/9r2 on comapring F' with F , we get a ratio of 1/9. So, the gravitational force (F') would be one-ninth of the original force (F).
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