Question 34: Gravitation

Question

The acceleration due to gravity at a height of $$7 \mathrm{~km}$$ above the earth is the same as at a depth d below the surface of the earth. Then d is

Accepted Answer

The variation of g with angular velocity $$\omega$$ is given by
$$g'=g-R\omega^2$$
If earth were to spin faster, that is angular velocity increases, then except at poles, the weight of bodies will decrease at all places.

Answer

7 km

Answer

2 km

Answer

3.5 km

Answer

14 km

Gravitation

The acceleration due to gravity at a height of $7 \mathrm{~km}$ above the earth is the same as at a depth d below the surface of the earth. Then d is

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