The coefficients of friction between a block of mass 10 kg, Ask an Expert

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The coefficients of friction between a block of mass 1.0 kg and a surface are µs = 0.75 and µk = 0.45. Assume the only other force acting on the block is that due to gravity.

A. What is the magnitude of the frictional force (in newtons) on the block if the block is at rest and the surface is horizontal?

B. What is the magnitude of the frictional force (in newtons) on the block if the block is at rest and the surface is inclined at 16^o

C. What is the magnitude of the frictional force (in newtons) on the block if the block is moving and the surface is inclined at 35^o

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