To what radius a silver strip 200 mm wide and 40 mm thick can be bent if the maximum stress in the ship is 80 N/mm2. Young’s modulus for Silver is 80×103 N/mm2.

To what radius a silver strip 200 mm wide and 40 mm thick can be bent if the maximum stress in the ship is 80 N/mm2. Young’s modulus for Silver is 80×103 N/mm2. Correct Answer 20m

Here, b = 200 mm; d = 40mm y = 40/2 = 20 mm f = 80N/mm2 From the relation; E/R = f/y R = E×y / f = 80000×20 / 80 = 20000mm = 20m.
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