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A metal wire of length L, area of cross – section A and Young’s modulus Y is stretched by a variable force F such that F is always slightly greater than the elastic forces of resistance in the wire. When the elongation of the wire is
detailed solution
Correct option is A
F=YAlL W=∫0lYAlLdl⇒W=12YA(lL)2LTalk to our academic expert!
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If x longitudinal strain is produced in a wire of Young's modulus Y, then energy stored in the material of the wire per unit volume is
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