what is the minimum workneeded to push a 950-kg car 810m up along a 9.0degree incline?

2 ⤊

(A) ignore friction
(B) assume the effective coefficient of friction retarding the car is .25

2006-10-15 14:45:41 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

(A) W=(M)(g)sin(angle)(d)

(B) W=d[-(M)(g)sin(angle)+
(M)(g)(.25)cos(angle)]

2006-10-15 15:03:08 · answer #1 · answered by ybot84 2 · 1⤊ 0⤋

None, if you get your husband to do it.

2006-10-16 03:01:47 · answer #2 · answered by Nomadd 7 · 1⤊ 3⤋