A spring has force constant

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

Problem

k

. It is compressed slowly from its natural length to an extension

x

. The work done by the external agent during this process is (a)

\dfrac{3}{4}kx^{2}

(b)

kx^{2}

(c)

\dfrac{1}{2}kx^{2}

(d)

\dfrac{1}{4}kx^{2}