Suppose that planet X had a mass exactly the same as planet Earth.?

Suppose that planet X had a mass exactly the same as planet Earth.?
Suppose that planet X had a mass exactly the same as planet Earth. A person weighs 884 N on Earth. What would be the mass (in kg) of the 884-N person on planet X if its radius were 2.23 times greater than that of planet Earth?

Answer by Debbie
The mass is independent of the force of gravity so m = W/g = 884N/9.8m/s^2 = 90.2kg

However on planet X the person’s weight would be 1/(2.23)^2 that of Earth = 884/2.23^2 = 178N

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