Physicshard · Past Paper
The gravitational force between two bodies is F. If the mass of one body is doubled and distance is halved, the new force is:
AF
B4F
C8F
D2F
✓ Correct Answer: C — 8F
F' = G(2m1 * m2) / (d/2)² = 2 * G(m1m2) / (d²/4) = 8 * F.
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