Question 2: A steel plate with width W = 1m, length h = 2m, and thickness r = 10mm, contains an edge crack of length a = 10cm. The plate is loaded in tension by two pairs of forces according to the illustration below. Determine the critical force Pe with respect to crack propagation. Is fracture mechanics an issue here? Material properties: v = 400 MPa, Kic = 20 MN/m².