Question

define small g and G

Answer 1

small g is acceleration due to gravity while big G is a gravitational constant.
The acceleration which is gained by an object becauseof the gravitational force is called its acceleration due to gravity.
the constant in Newton's law of gravitation relating gravity to the masses and separation of particles, equal to 6.67 × 10−11 N m2 kg− is called the gravitational constant

Answer 2

Small g is accelerations due to gravity and large G is gravitation constant