What are the coefficients of static and kinetic friction

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Problem: A box weighing 100N starts to move across a horizontal surface when a horizontal force of 25N is applied to it, but a force of only 20N is needed to keep it moving in uniform motion.

Required:

Question 1: What are the coefficients of static and kinetic friction?

Question 2: If the force is not applied horizontally but in a direction 30 degrees above the horizontal, find the coefficients of static and kinetic friction.

Reference no: EM132438884

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