To test your hydraulic skills, your Boss has requested you calculate the difference in water surface elevation between two reservoirs that are connected by three pipes in series. From upper to lower reservoir, the first pipe is 1000 meters long with a 200 mm diameter; the second pipe is 1,500 meters long with a diameter of 180 mm; and the third pipe is 2000 meters long with a diameter of 220 mm.

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.