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Q1. A short vertical column consists of a channel section with the dimensions shown in Figure 1(a). The column (part of a system used to support a machine) carries a compressive point load of 40 kN at the corner of a plate welded to the top of the column (Figure 1(b)). The material from which the column is manufactured has an allowable maximum working stress of 200 MNm-2.
You are required to verify the structural integrity of the column. Your answer is required to be in the form of a short report giving your opinion of the suitability of the channel section chosen. The report should include appropriate calculations and any recommendations for modifying the column and/or the loading arrangement.
Q2. A shaft carries three rotating masses A, B and C of magnitude 10 kg, 9 kg and 16 kg with their centres of mass 90 mm, 120 mm and 45 mm respectively from the axis of rotation. The distance between the planes of rotation of A and B is 0.8 m and between B and C is 1.7 m. The angular positions of the masses measured from A in the same direction are B 60 and C 135.
Find the magnitude and position of the masses required in planes L and M, situated midway between the planes A and B and the planes B and C respectively, in order to produce complete balance. The radius of rotation of the balance masses is 160 mm.
Fixed type In this set up, the welding head is kept fixed and the movement required during welding is provided through in the jobs to be welded. A typical application of this arr
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