Arectangular column of length l and cross-section 2 cm x 4 cm is cemented into the ground at one end. a weight on top applies an axial force f. for this column to perform its function, it must not buckle, so buckling is considered one type of failure in this case. plot the force fcrit required to cause the column to fail, as a function of l. assume e = 10 gpa, uss = 10 mpa, uts -20 mpa, and ucs 40 mpa. hints: consider failure due to both buckling and crushing, and don't forget your stress analysis.