Before the load is placed on the rigid plate, the top of the central spring is 20 mm lower than the outer springs. Each outer spring is made of 24 turns of 15-mm diameter wire on a mean radius of 60 mm. The central spring consists of 16 turns of 20 mm dimeter wire on a mean radius of 80 mm. If a load P = 5 kN is now placed on the rigid plate. Disregarding the weight of the plate, use G = 83 GPa and use Light spring formula. Determine the maximum shearing stress of the in uter spring

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