Exam-style question
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If the mass of one object is tripled, how does the gravitational force between it and another object change?.
- A.The gravitational force is tripled.
- B.The gravitational force is doubled.
- C.The gravitational force remains the same.
- D.The gravitational force is quadrupled.
Model answer
What a good answer should say
- The gravitational force is tripled.
Explanation
Why this works
According to Newton's law of gravitation, the force is directly proportional to the product of the masses. Therefore, if one mass is tripled, the gravitational force also increases by a factor of three.
Common mistake
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