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8.15 Beams of truss

Beams of truss.

Equations:	None.
Data:
t:	Magnitude of the force inside the beam. A positive value means tension and a negative value means compression. If this data is unknown, FisicaLab will display in the result if the beam is in tension or compressed.
ang:	Positive angle of the force, measured from the horizontal. This entry is present only in oblique beams.