A rocket is fired from the earth’s surface to a distant planet. By Newton’s law…

A rocket is fired from the earth’s surface to a distant planet. By Newton’s law of universal gravitation, the force F will
  • A.
    increase as r reduces
  • B.
    increase as G varies
  • C.
    remains constant
  • D.
    increases as r increases
Correct Answer: Option A
Explanation
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