a planet has half the mass of 20% more than that of the earth and radi

1.	a planet has half the mass of 20% more than that of the earth and radius is 20% less than that of the earth then find the accleration due to gravity
Answer» ong>Answer: FORCE due to gravity at EARTH's surface on a mass m: F = GMm/R2 F = Gravitational Force G = Gravitational Constant M = Earth's Mass m = mass of body R = Earth's radius The acceleration is F/m: g = F/m = GM/R2 For a planet with 0.9M and 1.2R: a = G(0.9M)/(1.2R)2 = 0.625 (GM/R2) = 0.625g (62.5% of Earth's acceleration due to gravity)

a planet has half the mass of 20% more than that of the earth and radius is 20% less than that of the earth then find the accleration due to gravity

Answer»

ong>Answer:

FORCE due to gravity at EARTH's surface on a mass m:

F = GMm/R2

F = Gravitational Force

G = Gravitational Constant

M = Earth's Mass

m = mass of body

R = Earth's radius

The acceleration is F/m:

g = F/m = GM/R2

For a planet with 0.9M and 1.2R:

a = G(0.9M)/(1.2R)2 = 0.625 (GM/R2) = 0.625g (62.5% of Earth's acceleration due to gravity)

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a planet has half the mass of 20% more than that of the earth and radius is 20% less than that of the earth then find the accleration due to gravity

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