a) What is the minimum work needed to push a 900 kg car 410 m up a 17.5° incline with zero friction?

If i know this answer is 1.08e6 what equation should i use for the next part because the one i used was wrong

(b) What is the minimum work needed if the effective coefficient of friction is 0.40?

1 answer

(b) W = M g H + friction work
= M g X sin17.5 + M g X cos 17.5 * 0.4

X = 410 m