M2 F M1 Figure 2.11: One box is being pushed up a slope angled at 0 above the horizontal, with a second box on it. Consider the situation shown in figure 2.11. It shows a box of mass m being pushed up a slope by a force of magnitude F with a box of mass m2 on it. There is a coefficient of kinetic friction k between box 1 and the slope, and a coefficient of static friction , between box 2 and the slope. If m = 10kg, m2 5kg, k 0.4, s 0.8, and = 20, what value of F is required for constant speed? The magnitude of the = = =