Does ‘G’ change with increasing height above the earth’s surface?
Value of G remains constant. Therefore, the value of G does not change with increasing or decreasing height.
In which direction does the force of gravitational attraction act?
The force of gravitational attraction acts along the line joining the centres of mass of the two bodies.
What does the small value of G indicate?
The small value of 'G' indicates that the force of gravitational attraction between two ordinary sized objects is a very weak force.
The value of G is very small but all the objects near the surface of the earth fall towards it. Why?
Mass of the Earth is very large. Therefore, the force of gravitation is sufficiently large to make all objects near its surface to fall towards it.