(Solved): Block A in (Figure 1) weighs 1.20N, and block B weighs 3.70N. The coefficient of kinetic fricti ...

Block $A$ in (Figure 1) weighs $1.20\mathrm{N}$, and block $B$ weighs $3.70\mathrm{N}$. The coefficient of kinetic friction between all surfaces is 0.305 . Find the magnitude of the horizontal force $\vec{F}$ necessary to drag block $B$ to the left at constant speed if $A$ rests on $B$ and moves with (figure (a)). Express your answer with the appropriate units. Figure 1 of 1 (a) (b) Find the magnitude of the horizontal force $\vec{F}$ necessary to drag block $B$ to the left at constant speed if $A$ is held at rest (figure (b)). Express your answer with the appropriate units.