KillGorack / Physics 2010 / If a planet has 3 times the radius of the Earth, but has the same density as the Earth, what is the gravitational acceleration at the surface of the planet? (g = 9.8 m/s2)

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Question If a planet has 3 times the radius of the Earth, but has the same density as the Earth, what is the gravitational acceleration at the surface of the planet? (g = 9.8 m/s2)
Answer 29.4 m/s^2

Notes

User	Added	Note	e	d
KillGorack	2023-06-17 18:52:59	This is because gravitational acceleration is directly proportional to the radius for planets of the same density. As the radius triples, the gravitational acceleration triples too.