10-98. The 60° strain rosette is mounted on a beam. The following readings are obtained for each gauge: Pa = 600(10-6), Pb = -700(10-6), and Pc = 350(10-6). Determine ( a ) the in-plane principal strains and ( b ) the maximum in-plane shear strain and average normal strain. In each case show the deformed element due to these strains.
 
 
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