The truss is made of three A-36 steel members, each having a cross-sectional area of 400 mm2. Determine the magnitude P required to displace the roller to the right 0.2 mm

Problem 4-8

The truss is made of three A-36 steel members, each having a cross-sectional area of 400 mm2. Determine the magnitude P required to displace the roller to the right 0.2 mm

Step by step solution

Step 1 of 5

Recall from theory that the formulas for calculating displacement of one side of a bar with relation to other,of a bar that has length are:

Or in the case that segments have are not infinite we use the formula:

we will write tensile forces and elongation of distances as positive and compressive forces and contracted distances as negative,this is about the internal forces nor all forces.