What is the effect on the gravitational force between two masses if the distance between them is doubled?
Answer and explanation
Correct answer: D. It becomes one quarter
- Step 1: Gravity follows an inverse square law, F ~ 1/r^2.
- Step 2: Doubling r divides F by 4.
Answer
It becomes one quarter.
Why not the others: Half, double and unchanged contradict the inverse square law.
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