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Work done in stretching chest – expander spring
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asked
Aug 25, 2017
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Engg-mechanics
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chandu
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The length of the chest – expander spring when it is unstretched is 0.6 m and its stiffness is
10 N/mm. The work done in stretching it to 1 m will be
(a) 800 J (b) 1600 J (c) 3200 J (d) 6400 J
iasprelims
2001
engg-mechanics
work-and-energy
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