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MGIMS WARDHA MGIMS WARDHA Solved Paper-2004

  • question_answer
    A raft of wood of mass 120 kg float. in water. The weight that can be put on the raft to make it just sink, should be\[({{d}_{raft}}=600kg/{{m}^{3}}):\]

    A) 80 kg                                     

    B) 50 kg         

    C) 60 kg                                     

    D) 30 kg       

    Correct Answer: A

    Solution :

    Volume of raft is given by \[V=\frac{m}{d}=\frac{120}{600}=0.2\,{{m}^{3}}\] If the raft is immersed fully in water, Then weight of water displaced is \[=V{{d}_{water}}\] \[=0.2\times {{10}^{3}}=200\,kg\] Hence, the additional weight which can be put on the raft \[=200kg-120kg=80kg\]


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