A truss with two bars PR and QR, making angles α and β, respectively, with the vertical, is shown in the figure below. The connections at P, Q and R are hinged connections. The truss supports a body of weight W (in N) at R as shown. The tension in the bar QR (in N) is

\(\dfrac{W \rm sin{\beta}}{\rm cos{\left( \alpha+\beta\right)}}\)

\(\dfrac{W \rm cos{\beta}}{\rm sin{\left( \alpha+\beta\right)}}\)

\(\dfrac{W \rm cos{\alpha}}{\rm cos{\left( \alpha+\beta\right)}}\)

\(\dfrac{W \rm sin{\alpha}}{\rm sin{\left( \alpha+\beta\right)}}\)

A truss with two bars PR and QR, making angles α and β, respectivel

1.	A truss with two bars PR and QR, making angles α and β, respectively, with the vertical, is shown in the figure below. The connections at P, Q and R are hinged connections. The truss supports a body of weight W (in N) at R as shown. The tension in the bar QR (in N) is
A.	\(\dfrac{W \rm sin{\beta}}{\rm cos{\left( \alpha+\beta\right)}}\)
B.	\(\dfrac{W \rm cos{\beta}}{\rm sin{\left( \alpha+\beta\right)}}\)
C.	\(\dfrac{W \rm cos{\alpha}}{\rm cos{\left( \alpha+\beta\right)}}\)
D.	\(\dfrac{W \rm sin{\alpha}}{\rm sin{\left( \alpha+\beta\right)}}\)
Answer» E.

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A truss with two bars PR and QR, making angles α and β, respectively, with the vertical, is shown in the figure below. The connections at P, Q and R are hinged connections. The truss supports a body of weight W (in N) at R as shown. The tension in the bar QR (in N) is

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