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V= (gR/mews)^.5

heres what i got so far.....

x direction forces) V^2/ (r) * m - static coeff *n = 0

y direction forces) static coeff *n - mg = 0

so mg = sf *n so v^2/ R = g so

V = (g/R)^.5 where does the sfriction coeff come from?!?

i worked backwards and saw that is must have been multiplied by

v^2/R.....now why would you do that.... thanks in advanced