(Solved): Problem \&, (20\%) Friction. A10 wedge is to be forced under end B of the 5kgg lod AB. Knowing ...

Problem \&, (20\%) Friction. $A10^{?}$ wedge is to be forced under end $B$ of the $5\mathrm{kgg}$ lod $AB$. Knowing that the coefficient of static friction is 0.40 between the wedge and the rod and 0.20 between the wedge and the floor; determine the smallest force $\mathbf{P}$ required to raise end $B$ of the rod. (Hint: centroid of the quarter-circular arc: $\stackrel{?}{x}=\stackrel{?}{y}=2r/?=2\times 0.3/?)$.