A load of 90 N falls from a height of 150 mm onto a collar attached...

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A load of 90 N falls from a height of 150 mm onto a collar attached to the lower end of a rigidly held rod. The compound rod is vertical and 900 mm long. The copper rod has a diameter of 12 mm for a length of 600 mm and the remaining 300 mm long of Aluminium rod has a diameter of 9 mm. Take ECU = 100 GPa and EAL = 65 GPa Determine: 2.1 The total elongation of the rod; [15 Marks] 2.2 The total strain energy stored in the compound rod; and [3 Marks] 2.3 The maximum stress induced. A load of 90 N falls from a height of 150 mm onto a collar attached to the lower end of a rigidly held rod. The compound rod is vertical and 900 mm long. The copper rod has a diameter of 12 mm for a length of 600 mm and the remaining 300 mm long of Aluminium rod has a diameter of 9 mm. Take ECU = 100 GPa and EAL = 65 GPa Determine: 2.1 The total elongation of the rod; [15 Marks] 2.2 The total strain energy stored in the compound rod; and [3 Marks] 2.3 The maximum stress induced.