Question

What is gravitational acceleration ? Obtain the general formula which shows (or depicts)
the relation between g and G.​

Answer 1

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.
G = 6.67300 × 10-11 N.m2.kg-2. G is a constant throughout space and time.
g = 9.8 m.s-2. g is a variable quantity.
G is a scalar quantity whereas g is a vector qualtity.

(According to Newton's law of universal gravitation the force of attraction between two bodies is given by F = GMm/r2, where the symbols stand for their usual well known meanings. Also the weight of a body of mass m is F = mg.
So mg = GMm/r2,
or g = GM/r2
g is a constant at a given location, which depends upon M and r.)


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