FIGURE 8-7 -An Object of Mass M Is at Rest on a Rest

question 55

Short Answer

FIGURE 8-7
-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. The object is allowed to move and it stops on a rough horizontal surface, at a distance of 4 m from the bottom of the inclined plane, as shown in Fig. 8-7. The coefficient of kinetic friction on the inclined plane is 0.4.
(a) What is the speed of the object at the bottom of the inclined plane?
(b) What is the coefficient of kinetic friction for the horizontal surface?

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