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A spring of mass m and natural length L is compressed vertically downward against the floor so that its compressed length becomes L/2 . On releasing, the spring attains its natural length, If k is the stiffness constant of the spring, then the work done by the spring on the floor is:-

(a) 0  (b)  (1/2) k L 2  (C)(1/2) k (l/2) 2   (d)k L 2


6 years ago


Answers : (1)


Dear Sanchit Gupta

Distance moved by floor is zero

so work done is also zero

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6 years ago

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