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CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    A raft of wood (density 600\[kg\text{/}{{m}^{3}}\]) of mass 120 kg floats in water. How much weight can be put on the raft to make it just sink?

    A)  120 kg                                 

    B)  200 kg

    C)  40 kg                                    

    D)  80 kg

    Correct Answer: D

    Solution :

                     Volume of raft of wood\[=\frac{120}{600}\] \[=0.2\,{{m}^{3}}\] Weight of water displaced\[=0.2\times {{10}^{3}}\times g\]    \[=200\,kg\,wt\] Mass of water displaced = 200 kg Hence, additional mass which can be added = 200 -120 = 80 kg


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