For the given state of stress, determine the normal and shearing stresses after the element shown has been rotated (a) 25 degrees clockwise, (b) 10 degrees counterclockwise.

For the given state of stress, determine the normal and shearing stress

after the element shown has been rotated (a) 25 degrees clock-wise, (b)

10 degrees counterclockwise.

90 MPa MPaaa

30 MPa

60 MPa

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