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Q.

A bomb of mass 9kg explodes into two fragments of masses 3kg and 6kg. The velocity of mass 3kg is 16m/sec. The energy of explosion is equal to (in Joule)

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a

384 J

b

576 J

c

192 J

d

1152 J

answer is B.

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Detailed Solution

From COM O=3(16)−6(v) ⇒ v=8 m/s Energy of explosion =12(3)(256)+12(6)(64)=576J
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