Q.
A log of wood of mass 80kg floats in water the weight that can be on the raft to make it just sink should be. (density of wood=600 kg/m3 )
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a
73.4 kg
b
53.3 kg
c
48.8 kg
d
64.6 kg
answer is B.
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Detailed Solution
(80+m)g=vBdwaterg (80+m)=80600×1000 ⇒m=8006−80=800−4806=3206=53.3grms
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