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Q.25 : When the load on a wire is increased
slowly from 1 kg wt to 2 kg wt the elongation
increases from 0.2 mm to 0.3 mm. How much
work is done during the extension ?
(g = 9.8 m/s²)
%3D
(a)
1.96 x 10-3 J (b) 19.6 × 10³ J
(c)
0.196 x 10-3 J
(d) 16 × 10-3 J

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