Question: A block slides down an inclined plane that makes an angle of 40 with the horizontal. There is friction between the block and the plane.

A block slides down an inclined plane that makes an angle of 40° with the horizontal. There is friction between the block and the plane. 

(a) Sketch all the forces on the block. Include a coordinate system. 

(b) Determine the components of the forces along the coordinate axes. 

(c) Write Newton’s second law for motion along both coordinate directions. 

(d) If the acceleration of the block is 2.4 m/s2, what is the coefficient of kinetic friction between the block and the plane?

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