A hollow MS pipe is kept on a smooth straight edge with the pipe mid point sitting on it. A load ‘W’ newtons is applied at the ends which is keeping the pipe balanced in the horizontal condition, what is the safe maximum load ‘W’ that can be applied without yielding the tube. Consider the self weight of the tube as ‘p’ N/m.Diagrammed of the pipe is ‘d’, Youngs modulus of pipe is E, Allowable yield stress is σ

• A. (σ π d4 – 64 p) / (64 E)
• B. (σ π d – 32 p) / (32 E)
• C. (σ π d3 + 64 p) / 64
• D. (σ π d3 – 64 p) / 64