An elastic spring of unstretched length `L` and force constant `K` is stretched by amoun t `x` .It is further stretched by another length `y` The work done in the second streaching isA. `((1)/(2)) ky^(2)`B. `((1)/(2)) k (x^(2) + y^(2))`C. `((1)/(2)) k (x + y)^(2)`D. `((1)/(2)) ky (2 x + y)`

An elastic spring of unstretched length `L` and force constant `K` is

1.	An elastic spring of unstretched length `L` and force constant `K` is stretched by amoun t `x` .It is further stretched by another length `y` The work done in the second streaching isA. `((1)/(2)) ky^(2)`B. `((1)/(2)) k (x^(2) + y^(2))`C. `((1)/(2)) k (x + y)^(2)`D. `((1)/(2)) ky (2 x + y)`
Answer» Correct Answer - D

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An elastic spring of unstretched length `L` and force constant `K` is stretched by amoun t `x` .It is further stretched by another length `y` The work done in the second streaching isA. `((1)/(2)) ky^(2)`B. `((1)/(2)) k (x^(2) + y^(2))`C. `((1)/(2)) k (x + y)^(2)`D. `((1)/(2)) ky (2 x + y)`

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