Question

At what altitude will the acceleration due to gravity be 25%

Answer 1

Brainly.in

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Secondary SchoolPhysics 13 points

At what altitudes in meter will the acceleration due to gravity be 25% of that at the earth's surface

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dkrahulverma19otw76i

dkrahulverma19otw76i

For this question,

We have the formula, g' = g/(1+h/R)^2

Here g' = acceleration due to gravity at the height

g = 9.8m/s^2

R = radius of earth

h = height

g/g' = (1+h/R)^2

4 = (1+h/R )^2

1+h/R = 2

h/R = 1

h = R

So at the height of 6371 km the value of g is 1/4 th of its original value

Answer 2

Answer:

6400 km

Therefore, at height 6400 km, the acceleration due to gravity is 25% of the acceleration due to gravity at the surface of the earth.