Who discovered the rate of gravity on earth to be -9.8m/s?

Answer 1

It was Newton's law of gravitation, certainly, but I believe it was indeed Henry Cavendish who established it to be 9.8 m/s/s or m/s^-2. This varies depending on your position on the surface of the planet, at higher altitudes this value is smaller. Also, the acceleration due to gravity, g, is larger at the poles and smaller at the equator due to the difference in distance between the centre of the earth and the 'surface' due to the slightly ellipsoid shape of the earth.

t was also true that Galileo hypothesized that objects will fall at the same rate with no relation to their mass, this experiment was carried out on the moon with a hammer and a feather. Some three hundred years later Galileo's hypothesis was proved right when the hammer and feather hit the surface of the moon simulatenously.

Answer 2

there isn't any such project as Gravity earth in basic terms sucks! heavily Issac Newton took the money he made as a Slaveship Captian and got here up with a crude interpretation of gravity after being awakened from a close eye by skill of an apple that fell from the tree he replaced into shading lower than! A german Leibnitz or something like that got here up with algarythems that more suitable useful defined the phenomina yet by no skill were given the credit.

Answer 3

Actually Galileeo Galile (An Italian scientist who spearheaded the Renaissance).
He was the first to observe that objects with different mass will fall at exactly the same acceleration, independent of their mass.
Legend has it that he calculated the exact acceleration by throwing 2 balls from the leaning tower of Pisa, and timing their fall.
Whether he really succeeded in doing this is questionable since air resistance really be neglected when doing this sort of experiment.

Answer 4

Henry Cavendish

Answer 5

Galileo came BEFORE the metric system...

Answer 6

Wasn't it Galileo?

Answer 7

Actually I think it was Newton...