Question: 5 - 8 7 The stepped bar shown in Fig. P 5 - 8 7 has a 0 . 7 5 - in . -
The stepped bar shown in Fig. P has a indiameter over half its length and a indiameter over the other half. The bar is made of an aluminum alloy with the idealized stressstrain diagram shown in Fig. Determine
a The change in length of the bar when
b The change in length of the bar when
Figure P
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