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EAMCET Medical EAMCET Medical Solved Paper-1999

  • question_answer
    A ladder 2.5 m long and 150 N weight has Us centre of gravity l m from the bottom. A weight 40 N is attached to the Top end. The work required to raise the ladder from the horizontal position to the vertical position is:

    A)  190 J                                    

    B)  250 J

    C)  285 J                                    

    D)  475 J

    Correct Answer: B

    Solution :

                     The work required to raise the ladder from horizontal to vertical position is given by Work done, \[W=mg{{h}_{cm}}+mgh\]                                 \[=150\times 1+40\times 2.5\] \[=150\times 100=250\,J\]


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