If for a curved beam of trapezoidal cross section, radius of neutral axis is 89.1816mm and radius of centroidal axis is 100mm, then find the bending stress at inner fibre whose radius is 50mm. Area of cross section of beam is 7200mm¬¨¬®‚Äö√¢¬ß and the beam is loaded with 100kN of load.$

If for a curved beam of trapezoidal cross section, radius of neutral a

1.	If for a curved beam of trapezoidal cross section, radius of neutral axis is 89.1816mm and radius of centroidal axis is 100mm, then find the bending stress at inner fibre whose radius is 50mm. Area of cross section of beam is 7200mm¬¨¬®‚Äö√¢¬ß and the beam is loaded with 100kN of load.$
A.	97.3
B.	95.8
C.	100.6
D.	None of the mentioned
Answer» D. None of the mentioned

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Residual stresses are always added in the load stresses and hence are always harmful.
All type of stresses vanishes after as soon as the applied load is removed.

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