A rigid, uniform weightless, horizontal bar is connected to three vertical members P,Q and R as shown in the figure (not drawn to the scale). All three members have identical axial stiffness of 10 kN/mm. The lower ends of bars P and R rest on a rigid horizontal surface. When no load is applied, a gap of 2 mm exists between the lower end of the bar Q and the rigid horizontal surface. When a vertical load W is placed on the horizontal bar in the downward direction, the bar still remains horizontal and gets displaced by 5 mm in the vertically downward direction.The magnitude of the load W (in kN, round off to the nearest integer), is130

A rigid, uniform weightless, horizontal bar is connected to three vert

1.	A rigid, uniform weightless, horizontal bar is connected to three vertical members P,Q and R as shown in the figure (not drawn to the scale). All three members have identical axial stiffness of 10 kN/mm. The lower ends of bars P and R rest on a rigid horizontal surface. When no load is applied, a gap of 2 mm exists between the lower end of the bar Q and the rigid horizontal surface. When a vertical load W is placed on the horizontal bar in the downward direction, the bar still remains horizontal and gets displaced by 5 mm in the vertically downward direction.The magnitude of the load W (in kN, round off to the nearest integer), is130
Answer» A rigid, uniform weightless, horizontal bar is connected to three vertical members $P, Q$ and $R$ as shown in the figure (not drawn to the scale). All three members have identical axial stiffness of $10 k N / m m$ . The lower ends of bars $P$ and $R$ rest on a rigid horizontal surface. When no load is applied, a gap of $2 m m$ exists between the lower end of the bar $Q$ and the rigid horizontal surface. When a vertical load $W$ is placed on the horizontal bar in the downward direction, the bar still remains horizontal and gets displaced by $5 m m$ in the vertically downward direction. The magnitude of the load $W$ (in kN, round off to the nearest integer), is 130

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