Question

han Han
leli medicine
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Answer 1

Let the mass and radius of earth be (M) and (R) respectively.

So g= GM/R^2

But in Planet X,

Mass = m = 2M

Radius = r = 3R

So g = G(2M)/(3R)^2

So g = 2/9 * g = g = 2 / 9 * 10m/s

So g = 0.9 * 2 = 2.22 m/s^2

The acceleration of planet is 2.22m/s^2

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