Question on Simple Stresses

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?

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@ashokraja94 @mohammadniyaz @Ram @Bhargavi72 try this one guys!

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Percentage error = 1.345

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Can you share how you got this answer?

ans is 1.342 %

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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?

Good work @ashokraja94 this is right!:+1:

Nice work guys! :ok_hand::clap:

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23%20PM
39%20PM

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