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The uniform steel lever is 100 mm thick and 30 mm deep.

The 20 mm diameter steel rod BC is attached to the lever AB and to the fixed support C shown in Fig 9. The uniform steel lever is 100 mm thick and 30 mm deep. Using the method of work and energy ,determine the length L of rod BC for which the deflection of point A is 40 mm. Use E= 200 G Pa and G =77 G Pa.

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