A spring of spring constant 5 x 10³ Nm⁻¹ is streched intially by 5 cm from the unstreched position.Then, the work required to strech it further by another 5 cm is

Options

(a) 12.50 cm
(b) 18.75 Nm
(c) 25.00 Nm
(d) 6.25 Nm

Correct Answer:

18.75 Nm

Explanation:

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