Question $2$: The wall shown below experiences a horizontal thrust. This thrust might have come from a roof. The wall is constructred from masonary with density of $2400k\frac{g}{m^3}.$

a$)$ Set up a general expression for distance of the line of thrust from the left$-$hand face of the wall.

b$)$ Calculate magnitude of the thrust at the base and its distance from the left$-$hand face of the wall.

c$)$ Determine the factor of safety $($FoS$)$ against overturning.