A 65.0 kg object is dragged with a force of 950 N at a 30º angle above a horizontal sidewalk for 1.62 km. If the coefficient of kinetic friction between the object and the sidewalk is 0.45, what is the net work performed by the person dragging the object?

Question

ghazi · Answer

$$W= F. d \cos \theta + u *mg \cos \theta =  950 * 1620 * \cos 30 - 0.45 *65 *10* \cos 30*1620$$

ghazi · Answer

$$W=F.d * \cos \theta - u *mg * \cos \theta $$ sorry there was a mistake