Question

Differentiate between 'g' and 'G'.

[Class 9 physics (NCERT)- chapter, Gravitation]​

Answer 1

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⏩ 'g' vs 'G' :-

☯ Acceleration due to gravity, or 'g' :-

→ It is the acceleration acquired by a body due to earth's gravitational pull on it.

→ 'g' is not a universal constant. It is different at different places on the surface of the earth. It's value varies from one celestial body to another.

→ It is a vector quantity.

☮ Universal gravitational constant, or 'G':-

→ It is numerically equal to the force of attraction between two masses of 1 kg each separated by a distance of 1 m.

→ 'G' is a universal constant. i.e., it's value is same viz., 6.67 × 10^-11 N-m² kg^-2 everywhere in the universe.

→ It is a scalar quantity.

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Hope it helps...:-)

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