A steel flat of thickness 10mm tapers uniformly from 60mm at one end to 40mm to the other end in a length of 600mm. If the bar is subjected to a load of 60 kN, find its extension. Take E = 200 GPa. What is the percentage error if average area is used for calculating the extension?

# Question on Simple Stresses

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Percentage error = 1.345

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Can you share how you got this answer?

How is the formula arrived? Is there any derivation? For calculation of extension!!!

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yes, this formula is of change in length of trapezoidal section

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Thanks…can u share the derivation?

Nice work guys!

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