Questions
The value of g at a certain height h above the free surface of the earth is x/4 where x is the value of g at the surface of the earth. The height h is
a
R
b
2R
c
3R
d
4R
detailed solution
Correct option is A
x=GMR2 Again, x4=GM(R+h)2 or x=GM2R+h2∴ 1R2=2R+h2=2R+h or R+h=2R or h=RTalk to our academic expert!
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A body weight W newton at the surface of the earth. Its weight at a height equal to half the radius of the earth will be
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