A 1510-kg car is being driven up a 6.38 o hill. The frictional force is directed

Question

A 1510-kg car is being driven up a 6.38 o hill. The frictional force is directed opposite to the motion of the car and has a magnitude of 526 N. A force F is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on the car: its weight W and the normal force FN directed perpendicular to the road surface. The length of the road up the hill is 284 m. What should be the magnitude of F, so that the net work done by all the forces acting on the car is 191 kJ? Number Units lem the tolerance is +/-290

Explanation / Answer

Since, there is no Fn force acting on the car =0J

Fnet = 1.91E5/284m = 6.725E2m

F=Fnet+mgsin6.38+Fk

F=6.725E2+1510*9.8*sin6.38 + 526N

F=2843 N

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