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A very dense UFS (Unidentified Flying Sphere) has radius 1530 m and acceleration due to gravity 9 m/s2 at its surface. Find t

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Answer #1

HERE,

the radius of sphere , r = 1530 m

let the mass of the sphere be m

the gravity at the surface , g = G * m /r^2

9 = 6.67 * 10^-11 * m /1530^2

solving for m

m = 3.15 * 10^17 kg = 3.15 * 10^20 g = 315 Eg

the mass of sphere is D) 315.9 Eg

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