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Socom
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Homework Statement
A 45-kg merry-go-round worker stands on the ride's platform 6.3m from the center. If her speed as she goes around the circle is 4.1 m/s, what is the force of friction necessary to keep her from falling off the platform?
Homework Equations
f=ma
Ac=v^2/r
mu=v^2/rg (derived from [mu]g=v^2/r
The Attempt at a Solution
I don't believe the 6.3m is relevant to the problem.
I believe Fnet=sigmaFx=theta=m*a
I am not really sure how to attack this problem and some help would be very nice.