GATE Civil Engineering (CE) 2018 Shift 2 Solved Paper

Question : 33 of 65

Marks: +1, -0

All the members of the planar truss (see figure), have the same properties in terms of area of cross-section

(A)

and modulus of elasticity

(E)

For the loads shown on the truss, the statement that correctly represents the nature of forces in the members of the truss is :

There are 2 members in tension, and 2 members in compression
There are 2 members in tension, 2 members in compression and 1 zero-face members
There are 2 members in tension, 1 members in compression and 2 zero-face members
There are 2 members in tension, and 3 zero-face members

Solution:

Since member BD neither elongate nor contract.
Hence,

F_{B D}=0

So there are 2 tension members (

{AB}

and

{DC}

) and 3 zero force members

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