Question

Differentiate 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.)

Answer 2

❀Answer❀

▶The basic difference between g and G is that ‘g’ is the Gravitational acceleration while ‘G ‘ is the Gravitational constant. The value of g changes with altitude while the value of G remains constant. Gravitational acceleration is the vector quantity and gravitational constant is the scalar quantity.