Question $2$: $(20$ marks, $25$min$)$

The Hammerhead tower crane shown in Fig. $2$ has component weights and dimensions shown in the table.

The turntable must resist bending moments to prevent the components above it from tipping

over. Assume the maximum bending moment it can resist is $900kNm.$

Figure $2$ Rlevation of Hammerhead Tower Crane

$($a$)$ What is the maximum load that can be lifted $($state cinid ass umpteinsmade$)?$

$($b$)$ What is the reaction at the bose of the

Mast when the maximum zoad is lifted?