Coefficient of kinetic friction for the horizontal surface

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An object of mass m is at rest on a rough inclined plane with height h, length 8 m, and which makes an angle of 30° with the horizontal (figure below). The object is allowed to move down and it stops on a rough horizontal surface, at a distance of 4 m from the bottom of the inclined plane, as shown in the figure. The coefficient of kinetic friction on the inclined plane is Mk = 0.4

(a) Using conservation of energy, find the speed of the object at the bottom of the inclined plane?

(b) What is the coefficient of kinetic friction for the horizontal surface?

Reference no: EM131161940

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