$-6-$

Block $A$ as shown in Figure $5$ has a mass of $45$ kg and rests on surface B$.$ If the mass of the suspended cylinder P is $5$ kg and the coefficient of static friction $({}_s)$ between:

Block A and surface $B$ is ${}_s=0\mathrm{.}22$

Cord and fixed peg at $C$ is ${}_s=0\mathrm{.}35$

$($a$)$ Determine the frictional force acting on Block A using appropriate free body diagram.

$($b$)$ Examine whether Block A will slip or tip over.