Stantcs$\_$Friction $2.$png

Problem $4.(10$ points$)$ The three stone blocks have weights of $W_A=1000N.,W_B=50N,$ and $W_C=500N.$ Determine the smallest horizontal force $P$ required to move this block. The coefficient of static friction at all contacting surfaces is ${}_s=0\mathrm{.}30.$ Draw $FBD(s)$ to solve the problem and anewer the forces in the Table below.

FBD$.$ of $q,(4$ points$)$

$(N_{BC}$ is the resultant normal force of the contact between blocks B and C$)$

$(N_c$ is the resultant normal force of the contact between block C and floor$)$

$\backslash$table$[[N_{BC}=,$ points$)],[N_C=,$ points