If a box is lying on the floor of a wagon with a coefficient of friction 0.2, what is the maximum acceleration of the wagon for which the box would remain stationary? (Let g = 9.81 m/s2)

If a box is lying on the floor of a wagon with a coefficient of fricti

1.	If a box is lying on the floor of a wagon with a coefficient of friction 0.2, what is the maximum acceleration of the wagon for which the box would remain stationary? (Let g = 9.81 m/s2)
A.	1.96 m/s2
B.	2 m/s2
C.	3.92 m/s2
D.	4 m/s2
Answer» B.