How do you solve for ΜK?How do you solve for ΜK?

μ k = f k N = f k w cos 25 ° = f k m g cos 25 °. Substituting known values on the right-hand side of the equation, μ k = 45. 0 N ( 62 kg ) ( 9. 80 m/s 2 ) ( 0. 906 ) = 0. 82