- #1
pixel01
- 688
- 1
Hi all,
We are now going to do a kind of experiment in which we use a plumb bob to identify the vertical direction.
But I think, the pumb string will point to the center of mass, while we need the geometric center . I mean the COM of the Earth is diffent from the geometric center and it depends on the position of the Moon.
Am I right? I if we still use the plumb bob, what is the errorness at max?
We are now going to do a kind of experiment in which we use a plumb bob to identify the vertical direction.
But I think, the pumb string will point to the center of mass, while we need the geometric center . I mean the COM of the Earth is diffent from the geometric center and it depends on the position of the Moon.
Am I right? I if we still use the plumb bob, what is the errorness at max?
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