Physicshard · Past Paper
If the radius of Earth was double its present value, and its mass remained the same, what would be the weight of a 60 kg person?
A600 N
B300 N
C150 N
D1200 N
✓ Correct Answer: C — 150 N
Weight is proportional to g. If radius is doubled, g becomes 1/4. Original weight = 60 * 10 = 600N. New weight = 600/4 = 150N.
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