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GATE 2019 ME (ME2) – Question 30

Engineering Mechanics · Plane trusses and frames · 1 mark · Numerical answer

The shown idealized plane truss carries a horizontal 300 N load at A. Find force magnitude in member CD (N).

Diagram for GATE 2019 ME (ME2) question 30

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Correct answer: 0 to 0

Explanation

At unloaded joint B,AB andBD are collinear,so BC=0. At unloaded C,AC andCE are collinear and BC is already zero. The only remaining noncollinear member CD must therefore carry **0 N**. The applied load at A does not invalidate the zero-force rules at B and C.