- #1
schaefera
- 208
- 0
Hi,
I was wondering about an issue that we just started in my physics class: we learned that center of mass (CM) and center of gravity (CG) coincide in an object as long as the force of gravity is uniform over that object. So, for something near the Earth's surface we can say that CM and CG coincide because the small change in height means that gravity is essentially uniform over that object; but when you get to the moon, do the CM and CG coincide? It's a very large object, so does gravity have a constant value all along it?
Thanks!
I was wondering about an issue that we just started in my physics class: we learned that center of mass (CM) and center of gravity (CG) coincide in an object as long as the force of gravity is uniform over that object. So, for something near the Earth's surface we can say that CM and CG coincide because the small change in height means that gravity is essentially uniform over that object; but when you get to the moon, do the CM and CG coincide? It's a very large object, so does gravity have a constant value all along it?
Thanks!