This force can either push the block upward at a constant velocity or allow it to slide downward at a constant velocity. The mag
nitude of the force is different in the two cases, while the directional angle θ is the same. Kinetic friction exists between the block and the wall, and the coefficient of kinetic friction is 0.310. The weight of the block is 55.0 N, and the directional angle for the force is θ = 50.0°. Determine the magnitude of when the block slides (a) up the wall and (b) down the wall.
Assuming that the vectors are acting along the same axis, we
could just simply add or subtract the vectors. Since the F1 is greater than F2,
there would be motion, there would be acceleration, and that the direction of
motion is along the F1.