Ablock with mass m1 86 kg is on an incline with an angle , Ask an Expert

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A block with mass m1 = 8.6 kg is on an incline with an angle ? = 31.0° with respect to the horizontal. For the first question there is no friction between the incline and the block.

Now with friction, the acceleration is measured to be only a = 3.74 m/s2. What is the coefficient of kinetic friction between the incline and the block?

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