Isaac newton only composed one law of gravity; you are confusing this with the three laws of motion that Newton also composed.
There are lots of questions that can be asked about gravity. I recently answered one on this site, which was, why is it that heavy objects and light objects fall at the same speed?
what was isaac newtons accomplsihments.? what was isaac newtons accomplsihments.?
Gravity
He wrote the laws of motion and the theory of gravity.
He discovered gravity?
discovering gravity, newtons three laws of motion
before society there was no gravity, now there is
from isaac newtons second law where he used to find it
The answer is Newtons. Like Sir Isaac Newton
Gravity, he also made a new measurement of weight, Newtons
according to Isaac Newtons law of gravity. apple's fall from trees.
He is famous for finding gravity from trying to found out why and apple always falls down and never goes up when it comes off a tree. Isaac Newton made a contraption which allows you to weigh gravity in newtons.
Isaac Newton invented Newtons.