Determine the force in members $LK,KC,$ and $CD$ of the Pratt truss $.$

State if the

members are in tension or compression. Take that $P_1=21kN,P_2=30kN,$ and $P_3=42kN.$

Part A

Determine the force in the member $KC,$ and state if the member is in tension or compression.

Express your answer to three significant figures and include the appropriate units. Assume positive scalars for members in tension and negative scalars for members in compression.

View Available Hint$($s$)$

$F_{KC}=$

Part B

Determine the force in the member $CD,$ and state if the member is in tension or compression.

Express your answer to three significant figures and include the appropriate units. Assume positive scalars for members in tension and negative scalars for members in compression.

View Available Hint$($s$)$

$$

$?$

$F_{CD}=$

Part C

Determine the force in the member $LK,$ and state if the member is in tension or compression.

Express your answer to three significant figures and include the appropriate units. Assume positive scalars for members in tension and negative scalars for members in compression.