Question: ( a ) Two ( 2 ) hollow brass columns made of circular and square shape have an effective length of 4 + 5 m

(a) Two (2) hollow brass columns made of circular and square shape have an effective length of 4+5m. The cross section for each column is shown in Figure 2(a). The modulus of elasticity is 200GPa.
i. Determine the wall thickness, t0 of the hollow square if both columns have the same area
ii. Calculate the critical load of each column
[5 Marks]
( a ) Two ( 2 ) hollow brass columns made of

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