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AP EAMCET Engineering 17 Sep 2020 Shift 1 Paper

Section: Physics

Question : 113 of 160

Marks: +1, -0

Acceleration due to gravity ___________

Solution:

Acceleration due to gravity above the surface (at altitude) is given as

g' = \frac{g}{\left(1+\frac{h}{R_e}\right)^2} = g\left(1+\frac{h}{R_e}\right)^{-2}

g' = g\left(1-\frac{2h}{R_e}\right)

.....(i)

[By binomial theorem

(1+x)^n = 1 + n x

, when

x < 1]

From Eq. (i), it is clear that acceleration due to gravity decreases with altitude.

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