Question

why the value of G goes on decreasing as the height increases or decreases​

Answer 1

$\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the Universal Gravitational Constant

Basically here , we are going to start from the

Gravitational Force Formula that's

F = GMm/r^2

so we can see here,

G is directly proportional to r^2

so with increase in the height, the value G also increases and vice versa.