Consider the space truss shown in $($Figure $1).$ Suppose that $P=9kN.$ Assume

all members are pin connected.

Determine the force in the member $CH$ of the truss.

Express your answer using three significant figures using appropriate units. Enter a negative value in the case of compression and a positive value in the case of tension.

$F_{CH}=$

Part B

Determine the force in the member $CD$ of the truss.

Express your answer using three significant figures using appropriate units. Enter a negative value in the case of compression and a positive value in the case of tension.

$F_{CD}=$

Part C

Determine the force in the member $HI$ of the truss.

Express your answer using three significant figures using appropriate units. Enter a negative value in the case of compression and a positive value in the case of tension.

$F_{HI}=$