The state of plane stress at a point on a body can be depicted by the Mohr's circle below. Point X has coordinates (13,-29) MPa and point Y has coordinates(-18, 29) MPa. Determine the normal and shear stresses associated with a rotation of the stress element θ 25°. Remember that a negative sign indicates a clockwise rotation and a positive sign indicates a counter- clockwise rotation. Note that you can use the Mohr's circle to obtain your answers graphically or you can apply the stress transformation equations.
