- Colichemarde
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- Noble Member
Posted by: Hovemond
Posted by: Colichemarde
Posted by: Halosopher
Posted by: ronan1555
The ring spins.
Its not gravity its centrifugal force.Centrifugal force doesn't actually exists. The centripetal force, however, does.
Both types of force exist.
CENTRIFUGAL
1: proceeding or acting in a direction away from a center or axis
2: using or acting by centrifugal force
3: efferent
4: tending away from centralization
CENTRIPETAL
1: proceeding or acting in a direction toward a center or axis
2: afferent
3: tending toward centralization
If it where centripetal, Chief would have been fighting on the outside of the halos, not the inside.
Not... exactly.
There is no such thing as a centrifugal force. There can be such a thing as centripetal forces, but there is no fundamental force called centripetal force (fundamental in the sense that the electromagnetic, weak, strong, and gravity forces are).
See, when something is spinning, it is constantly being accelerated inwards. This is because otherwise, it would simply fly off in a line tangential to the spin. To keep the ring where it is, but still moving, you need a force applied towards the center of the ring. This is called the centripetal force of the system.
Centrifugal force isn't really a force at all, however. Centrifugal "force" is just an effect of inertia. Since the centripetal force isn't acting on YOU directly on a spinning ring, just the ring, your inertia keeps you flying on a tangent. However, the ring stops you (and accelerates you in ITS direction), and so you accelerate on a new tangent. This has the effect of keeping you pushed into the inside of the ring, but it's not a real force, just inertia. The only force in this system is pushing the ring inwards.
You should say gravity then. There are 4 "forces"; the weak and strong nuclear, magnetism, and gravity. No one was trying to be so specific, but whatever. We're talking about what the ring does to keep you grounded on the inside. That action is called Centrifugal Force.
[Edited on 01.12.2011 6:01 PM PST]