PHYSICS URGENT! PLEASE FRICTION CASE 2
posted by Sophia .
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?