Question

How did newton come up with the law of universal gravitation?

Answer 1

once upon a time issac newton is sitting under a apple tree and a apple has fall on his head .He thinks that why is the apple falls on it. and then he thinks about that and made the universal law of gravitation

Answer 2

if Newton was not siting under a apple tree...then who will give universal gravitation law...a apple fall and he thought there must be a attractive force that is attracting apple to earth...named later gravitation force
:F =gravitation constant×mass of apple ×mass of earth/distance between them