- #1
vlado
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Does the moon rotate around it`s axis?
for images see please: http://omega.webzdarma.cz/applety/moon/moon.html
The moon doesn`t rotate around it`s axis, I think. In many books the moon does rotate around it`s axis.
I have never undrestood why. Let mi introduce my point of wiew. We feel centrifugal force if the body does rotate. And it is evidence that body does rotate. This is only idea I used to decide if the body rotate or not.
The train goes around circle. The merry-go-round is on wagon. The merry-go-round does rotate - the observer at centre of circle can see all merry-go-round, but we can`t see all moon. The obsever sitting on the merry-go-round feel centrifugal force - evidence of rotating.
The merry-go-round doesn`t rotate - the observer at centre can`t see all merry-go-round.We can`t see all moon. The obsever sitting on the merry-go-round can`t feel centrifugal force to centre of merry-go-round - evidence no rotating.
We can`t see all moon, we can see only one side of train. I can`t imagine how does the train can make at least one turn around it`s axis, going on rail. If the merry-go-round on wagon does rotate, observer at centre would see all merry-go-round, but we can`t see all moon.
I understand that, the red point does rotate with respect to blue referece frame, and observer at centre of circle can see this point at the same position with respect to "train". But does observer sitting on merry-go-round feel centrifugal force to centre of merry-go-round if merry-go-round doesn`t rotate with respect to train?
for images see please: http://omega.webzdarma.cz/applety/moon/moon.html
The moon doesn`t rotate around it`s axis, I think. In many books the moon does rotate around it`s axis.
I have never undrestood why. Let mi introduce my point of wiew. We feel centrifugal force if the body does rotate. And it is evidence that body does rotate. This is only idea I used to decide if the body rotate or not.
The train goes around circle. The merry-go-round is on wagon. The merry-go-round does rotate - the observer at centre of circle can see all merry-go-round, but we can`t see all moon. The obsever sitting on the merry-go-round feel centrifugal force - evidence of rotating.
The merry-go-round doesn`t rotate - the observer at centre can`t see all merry-go-round.We can`t see all moon. The obsever sitting on the merry-go-round can`t feel centrifugal force to centre of merry-go-round - evidence no rotating.
We can`t see all moon, we can see only one side of train. I can`t imagine how does the train can make at least one turn around it`s axis, going on rail. If the merry-go-round on wagon does rotate, observer at centre would see all merry-go-round, but we can`t see all moon.
I understand that, the red point does rotate with respect to blue referece frame, and observer at centre of circle can see this point at the same position with respect to "train". But does observer sitting on merry-go-round feel centrifugal force to centre of merry-go-round if merry-go-round doesn`t rotate with respect to train?
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