7. The boom and tie-rod assembly, as shown, supports a load of 6 kN. The tie-rod is made of steel, having a yield strength S = 400 MPa.
a. Determine if the tie-rod would experience elastic instability (buckling) under the loading.
b. Repeat part (a) if the vertical rod is rotated 180° so that the 6 kN load acts upward.
12 mm-diameter tie-rod
1 m
0.7 m
Boom
6 kN
0.7 m
1 m