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wock

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## Homework Statement

1. A steel bar 375mm long is machined to give a diameter of 75mm for the first 175mm length, a diameter of 45mm for the next 100mm length and a diameter of 37mm for the final 100mm length. Determine:

(i) The total extension of the bar when it’s subjected to an axial tensile load of 84 kN.

(ii) The tensile stress in each portion of the bar.

Assume E = 200 GN/m2

## Homework Equations

## The Attempt at a Solution

can this be solved by working out each part as if it were 3 separate bars ?