JAMB Physics 2012 Objective — Question 8
Question 8 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2012 Objective paper, with the correct answer and a full explanation.
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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 reducesCorrect
- B. increase as G varies
- C. remain constant
- D. increase as r increases
Explanation
By Newton's law of gravitation, F = Gm1m2/r², so as the distance r between the masses reduces, the force F increases (inverse square relationship).
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