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11-01-2021
Physics

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The radius of a planet is three times that of Earth and its mass is nine times that of Earth. The acceleration due to gravity on this planet is _________g.

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pstnonsonjoku pstnonsonjoku

12-01-2021

Answer:

9.836 ms^-2

Explanation:

If

r= 3re

m= 9me

But

g= Gm/r^2

G= 6.67 × 10^-11

me= 6 × 10^24 Kg

re= 6.38 × 10^6 m

g= 6.67 × 10^-11 × 9×6 × 10^24/(3 ×6.38 × 10^6)^2

g= 9.836 ms^-2

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