Part I. Shorter problems focused on the fundamentals

The system shown has a pin at A and a roller at B $.$ If the moment, $M=287ft-lb(CW),$ the force, $F=57lb$ is

applied at an angle, $=69.$ If the height $=8\mathrm{.}8ft.,$ and length $=7ft.$

a$.$ What are the support reactions at A & B$?$ Draw FBD$.$

b$.$ What is the total APPLIED MOMENT around point A$?$

$-28751\mathrm{.}1h$

$beis$ clach wise

c$.$ What is the total CAUSED MOMENT around point A by Force F$?$

$m_c=57cos(69)(6\mathrm{.}6)+57sin(69)(7)=-552\mathrm{.}3$

clach vise

d$.$ If you sum the moments around point $A,$ what is the reaction at $B?$

e$.$ If you sum the forces in the $x$ & $y$ direction, what is the reaction at $A?$