As Charlie stated, this is a statics question. You need to provide more information.
Where are the supports? If the base, i.e., the beam is supported at both ends, let's say by cement blocks, and the connections are considered to be pin connections, the two diagonal tube could have no load other than their dead weight.
However, if the two tubes are hanging from a hook and the load is hanging or supported by the beam, you need to know the lengths of the members to derive a numerical solution.
A sketch of the conditions saves a lot of typing and additional questions.
Best regards - Al