The force constant of a weightless spring is \( 16 \mathrm{~N} / \mathrm{m} \). A body of mass \...

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The force constant of a weightless spring is \( 16 \mathrm{~N} / \mathrm{m} \). A body of mass \( 1.0 \mathrm{~kg} \) suspended from it is pulled down through 5 \( \mathrm{cm} \) and then released. The maximum kinetic energy of the system (spring + body) will be [MP PET 1999; DPMT 2000]
(a) \( 2 \times 10^{-2} \mathrm{~J} \)
(b) \( 4 \times 10^{-2} \mathrm{~J} \)
(c) \( 8 \times 10^{-2} \mathrm{~J} \)
(d) \( 16 \times 10^{-2} \mathrm{~J} \)
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