Answer:
fs = m[tex]v^{2}[/tex] / R
= mR[tex]w^{2}[/tex] ........... where w = 2[tex]\pi[/tex]f
then fs = µsN = µs×mg = R[tex]w^{2}[/tex]
µs = R[tex]w^{2}[/tex]/g , since w = 2[tex]\pi[/tex]f = 2[tex]\pi[/tex]× 39.0
= 4.084
µs = 0.12×[tex]4.084^{2}[/tex] / 9.8
= 0.204
Explanation:
when using this equation it is important to look at the units you working with so that it would be much easier to workout the solution.
