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PHYSICS URGENT! PLEASE FRICTION CASE 2

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A 13 kg box is at rest on a level floor. The coefficient of static friction µS = 0.9 and the coefficient of kinetic friction µK = 0.8. Audrey is applying a 140 N push at an angle (=20°) as shown in Figure 1.


C) What is the magnitude of FNormal on box from Earth?

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