### Determine the friction force developed at b

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The spool has a mass of 200 kg and rests against the wall and on the floor. If the coefficient of static friction at B is (µs)B = 0.3, the coefficient of kinetic friction is (µk)B = 0.2 , and the wall is smooth, determine the friction force developed at B when the vertical force applied to the cable is . P = 800

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