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Find the weight of the atmosphere around...

Find the weight of the atmosphere around the earth (take the radius of earth as 6400km.)

A

1600 km

B

1400 km

C

2000 km

D

2600 km

Text Solution

Verified by Experts

The correct Answer is:
D
`implies g= (GMe)/(r^2) and phi = -(Gme)/r`
`:.phi/g = -r `
`= - (5.4 xx10^7)/(6.0) =-r`
`:. 9 xx 10^(7) =r`
`:. 9 xx 10^(7) = Re +h`
`:. H = 9000 xx 10^3 - Re`
`:.h = 9000 km - 6400 km `
`= 2600 km `
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