Deflection of the Rigid Bar  
scene 4 of 6
The figure shows a vertical bar A B C which is pinned at B and supported by horizontal rods at A and C. The length of the segments A B and B C are 400 millimeters and 520 millimeters respectively. The rod at C is of length 2000 millimeters and the rod at A is of length 1250 millimeters. A load P directed to the right acts on the bar between B and C. The rod at A is compressed by 1.4 millimeters and the rod at C is stretched by 1.82 millimeters.

The principle of similar triangles can be used to determine the rigid bar deflection at point A.

VA400 mm=1.82 mm520 mm    ∴VA=1.40 mm