Question

6. Is value of 'g' same everywhere?
7. What is the value of 'G'?​

Answer 1

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• Is value of 'g' same everywhere?

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• The value of g at all place is not the same, it varies. The value of g is more at the poles and less at the equator. Hence on the basis of altitude the value of g changes.

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• What is the value of 'G'?

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• $\small \underline {\sf{ G = 6.674×10^-11 Nm^2/kg^2. }}$

G is the universal gravitational constant, $\small \underline {\sf{ G = 6.674×10^-11 Nm^2/kg^2. }}$M is the mass of the massive body measured using kg. R is the radius of the massive body measured using m. g is the acceleration due to gravity measured using m/s2

Answer 2

1st question :-

No, the value of 'g' is not same everywhere. It's value is different in different positions. It decreases with height and depth.

Some Extra Information about 'g'.

• The value of g at the surface of earth is

9.8m/s² on an average.

• The value of g is more at poles and less

at equator.

• The value of g is zero at the centre of

the Earth.

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2nd question :-

The value of 'G' is 6.67×10⁻¹¹ Nm²/kg²

Some Extra Information about 'G' :-

• The value of 'G' is same everywhere in

the Universe.

• It can be defined as the gravitational

force between the bodies of unit mass

separated by a unit distance.

• The value of G was initially determined

by Henry Cavendish in 1798 by using

an instrument called torsion balance.