Theory of Structures - Engineering

Q1:

The force in AD of the truss shown in given figure, is

A 4.0t compression

B 3.0t compression

C 0.5t compression

D 0.5t tension

E zero.

ANS:C - 0.5t compression

@Manoj Paridwal.

When axial force moves towards the joint it is compression. As the reaction on the left side +ve so it is an upward reaction, so to balance it an equal downward force will be induced in the member AD. Hence both as the forces are moving towards the joint A hence the member AD is under compression.