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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Newton’s law of universal gravitation

Jamb Physics Questions - Newton’s law of universal gravitation

Question 1:
Which of the following statements are true of the law of universal gravitation?
  • A Any two bodies attract each other with a force which is proportional to the difference of their masses
  • B Any two bodies attract each other with a force which is inversely proportional to the square of the distance between them
  • C Any two bodies attract each other with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them
  • D Any two bodies attract each other with a force which is proportional to the square of the distance between them
  • E Any two bodies attract each other with a force which is proportional to the sum of their masses
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Question 2:
Which of the following statements are true of the law of universal gravitation?
  • A Any two bodies attract each other with a force which is proportional to the difference of their masses
  • B Any two bodies attract each other with a force which is inversely proportional to the square of the distance between them
  • C Any two bodies attract each other with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them
  • D Any two bodies attract each other with a force which is proportional to the square of the distance between them
  • E Any two bodies attract each other with a force which is proportional to the sum of their masses
View Answer & Explanation
Question 3:
The force responsible for holding the moon in its orbit around the earth against the gravitational pull of the earth is
  • A Centrifugal
  • B Rotational
  • C Reaction
  • D Centripetal
  • E Tractional
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Question 4:
The force experienced by an object of mass 60.0kg in the moon's gravitational field is 1.002 x 102N. What is the intensity of the gravitational field?
  • A 0.60Nkg<sup style='font-size: smaller;'>-1</sup>
  • B 1.67Nkg<sup style='font-size: smaller;'>-1</sup>
  • C 6.12 x 10<sup style='font-size: smaller;'>2</sup>Nkg<sup style='font-size: smaller;'>-1</sup>
  • D 9.81ms<sup style='font-size: smaller;'>-2</sup>
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Question 5:
A planet has mass m1 and is at a distance r, from the sun. A second planet has mass m2 = 10m1 and at a distance of r2 = 2r1 from the sun. Determine the ratio of the gravitational force experienced by the planets.
  • A 1 : 5
  • B 2 : 5
  • C 3 : 5
  • D 4 : 5
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