Question

earth exerts a gravitational force on moon but it does not fall on earth why

Answer 1

 Let me draw an exaggerated diagram of the Earth moon system with a non-circular orbit. Maybe it is difficult to see, but in this case the gravitational force on the moon is NOT perpendicular to the velocity. ... This is what happens with most orbits. The moon moves closer to the Earth and speeds up as it does so.

Answer 2

HELLO

The moon "falls" toward Earth due to gravity, but doesn't get any closer to Earth because its motion is an orbit, and the dynamics of the orbit are determined by the strength of gravity at that distance and by Newton's laws of motion