Consider the truss shown in $($Figure $1).$ Suppose that $P=60kN.$

Part C

Determine the force in member $BC$ of the truss, and state if the member is in tension or compression. Fef $=-120$ kN $($Compression$),$ Fcf$=69\mathrm{.}3$kN $($Tension$)$

Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value

in the case of tension.

$F_{BC}=$