The state of plane stress shown where x = 6.8 ksi will occur at a critical point in an aluminum casting that is made of an alloy for which OUT=10 ksi and σUC= 25 ksi. Using Mohr's criterion, determine the shearing stress To for which failure should be expected. (Round the final answer to two decimal places.) The shearing stress To for which failure should be expected is ±[ ksi.
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