center of mass and center of gravity different in non uniform gravitation field?expl

muhammadusman

give answer to this question

jmatejka

Here is a simplified laymanized. answer given to me one time. Often for practical purposes, center of mass and center of gravity are considered the same on "earth".

If you were falling into a "black hole", pull of gravity on your feet may be much stronger than on your midsection. Midsection stays "center of mass". Feet become "center of gravity".

I'm sure you'll get a much better answer from others here.

Naty1

yes.

http://en.wikipedia.org/wiki/Center_of_mass

muhammadusman

u r right but can u tell me that where the gravitaional forces are uniform nd where are these forces nonuniform.

arildno

The centre of gravity is, essentially that point at which it can be regarded to be concentrated, for purposes of torque calculations.

If it exists, that is!

See my post here:
http://www.physicsforums.com/showthread.php?t=95524