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Calculate the average density of the earth in terms of g, G and R.

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asked Oct 14, 2017 in Physics by jisu zahaan (28,760 points) ● 28 ● 436 ● 1080

Calculate the average density of the earth in terms of g, G and R.

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answered Oct 14, 2017 by sforrest072 (157,439 points) ● 63 ● 448 ● 1271

g = G M/ R2 or 

M = ×  g x R2 /G  ⇒ Density 

D = mass / volume = g x R / g x R (Where Ve is the volume of the earth ) or 

D = gxR2 / G x (4/3) π R3

= 3g / 4πGR

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