A wire of natural length l , Young's modulus Y and area of cross-section A is extended by x . Then the energy stored in the wire is given by

Question

A wire of natural length l , Young's modulus Y and area of cross-section A is extended by x . Then the energy stored in the wire is given by, 1 2 Y A l x 2, 1 3 Y A l x 2, 1 2 Y l A x 2, 1 2 A Y l x 2

MARKS App · Accepted Answer

Energy stored in the wire U = 1 2 Y × ( s t r a i n ) 2 × v o l u m e or U = 1 2 Y × x l 2 × A l or U = 1 2 Y x 2 l × A or U = 1 2 Y A l x 2

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