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Home Q & A Board Science-Related Homework Help Physics
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iloveapbio iloveapbio
wrote...
solved
11 years ago
I keep seeing a whole set of different answers in yahoo answers and i just really want to know for sure because i have a huge test tomorrow and i really don't want to fail because i remembered the wrong answer

so can anyone please clear this up? ):

If mass increased, does the centripetal force increase?
What about the radius?
Or tangential velocity?

Thank you so much.
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wrote...
#1
11 years ago
the formula is m*v^2/r
so clearly if mass is increased and velocity the force needed to maintain the circular motion increases, on the other hand if radius increases the needed centripetal force decreases.
wrote...
#2
11 years ago
If mass increased, centripetal force increases because F=ma.

If radius increased, centripetal force decreases because centripetal acceleration, a.k.a. radial acceleration is a=v^2/r. Plug that into F=ma, and you get F=(mv^2)/r.

If tangential velocity increased, centripetal force would increase.
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