This time I'm uncertain as to how to start: Body A in Fig. 6-34 weighs 98 N, and body B weighs 70 N. The coefficients of friction between A and the incline are ms = 0.50 and mk = 0.27. Angle is 48°. Let the positive direction of an x axis be down the slope. What is the acceleration of A if A is initially (a) at rest, (b) moving up the incline, and (c) moving down the incline? I'm sorry I can't produce the figure but it seems to be your standard two blocks tugging on each other on an inclined plane situation. I figured the answer to a would be 0, since an object at rest stays at rest according to Newton, and got that one right intuitively. However, I'm uncertain how to proceed for b and c. I attempted to setup equations for both bodies. For body A, I've got: X component: f - wA(weight of body A) - Tcos(theta) = ma. Y component: Fn + Tsin(theta) - wA = ma For body B, I've got: T - wB = ma Can I proceed like this or is something off?