1. The problem statement, all variables and given/known data What is the minimum work needed to push a 1770 kg car 346 m up a 16.2 deg incline? Without friction, I got the the answer of 1670000 J. What is the minimum work needed if the coefficient of friction is 0.25? 2. Relevant equations 3. The attempt at a solution Ff=µFN FN = 17346 cos 16.2 FN = 16657 N Ff = .25 * 16657 = 4164.25 N then, sin16.2 * 17346 = 4839 N add them? subtract? or is it all completely wrong?