$3.[20]$ A $200$N force is applied as shown to the bracket ABC at point C$.$ Determine:

a$)$ The moments about point $B($assuming that the bolt is missing from $A)$

la $=RbF,($cross product$)$

The force is $60$ degrees from horizontal $($in the $x-y$ plane$)$

b$)$If the force was $-200$N j $($vertical$)($no $x$ or $z$ component$)$ and the bolt was still not in A $.$ What are the reaction forces and moments on a and $b?$ Make sure to state tension or compression$\mathrm{.}3.[20]$ A $200$N force is applied as shown to the bracket ABC at point C$.$ Determine:

a$)$ The moments about point $B($assuming that the bolt is missing from $A)$

la $=RbF,($cross product$)$

The force is $60$ degrees from horizontal $($in the $x-y$ plane$)$

b$)$If the force was $-200$N j $($vertical$)($no $x$ or $z$ component$)$ and the bolt was still not in A $.$ What are the reaction forces and moments on a and $b?$ Make sure to state tension or compression.