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Statement of a problem № 10530

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While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.41. The pushing force is directed downward at an angle u below the horizontal. When ( is greater than a certain value, it is not possible to move the box, no matter how large the pushing force is. Find that value of (?




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