Consider the Warren truss shown in with spacing $a=3\mathrm{.}8m$ and applied loads $P_1=890N$ and $P_2=1220N.$ Assume all the members are pin connected. Solve Parts A$,$ B$,$ and C below.

Part A $-$ Support Reactions

Part B $-$ Members $BC$ and $BK$

Determine $F_{BC}$ and $F_{BK},$ the forces in members $BC$ and $BK,$ using the method of sections. Assume for your calculations that each member is in tension, and include in your response the sign of each force that you obtain by applying this assumption.

Express your answers in newtons to three significant figures separated by a comma.

View Available Hint$($s$)$

$F_{BC},F_{BK}=$

$N$