All Questions
4
questions
2
votes
2
answers
532
views
How to explain the Earth's Equatorial bulge without centrifugal force?
There are many answers to the question why is the Earth bulged at the equator, see e.g. here, but almost all of them involve centrifugal force. Since it's a fictitious force, how to we explain this ...
- 307
0
votes
2
answers
69
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Gravitational force effects on velocities of rotating bodies
If we take a satellite rotating around the earth, then the earth applies centripetal force to the satellite, but what if the satellite suddenly looses kinetic energy, maybe because of collision, the ...
- 35
0
votes
2
answers
1k
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Is gravity the Earth's centripetal acceleration? Should the gravitational acceleration be equal to the centripetal acceleration at the equator?
I understand that different forces can act as centripetal forces (shear, tension of a string etc) but in the case of the rotating earth, is it really the gravitational force the centripetal force that ...
- 155
2
votes
3
answers
147
views
Can a pole balance on its end in a centrifuge?
Let us say you are in a giant bucket on the end of a long rope attached to a big motor spinning horizontally, swinging the bucket around fast enough that there is a force equivalent to 6 gravities ...
- 171