Spring A has spring constant and is stretched by

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

Spring A has spring constant

k

and is stretched by

4\,\text{cm}

, storing elastic potential energy

E

. Spring B has spring constant

2k

. To store the same energy

E

in spring B, its extension should be closest to (a)

2.0\,\text{cm}

(b)

2.8\,\text{cm}

(c)

4.0\,\text{cm}

(d)

5.7\,\text{cm}

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