Posted by jessica on Monday, December 6, 2010 at 9:55pm.
acceleration down slope = w^2 R cos 10
so m a = m w^2 R cos 10
Force down slope = m g sin 10 + mu m g cos 10
so
g sin 10 + mu g cos 10 = w^2 R cos 10
g tan 10 + mu g = w^2 R
mu = ( w^2 r/g -tan 10)
= 0.201