When a spring is stretched by a distance x, it exerts a force given by F = (–5x – 16x3)N Find the work done when the spring is stretched from 0.1 m to 0.2 m is :-
(1) 8.7 × 10–2 J
(2) 12.2 × 10–2 J
(3) 8.1 × 10–1 J
(4) 12.2 × 10–1 J
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