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CMC Medical CMC-Medical Ludhiana Solved Paper-2010

  • question_answer
    A 10 kg mass moves 3.0 m against a retarding force shown in figure. If the force is zero at the beginning, how much kinetic energy is changed?

    A)  + 6 J                                     

    B)  - 6 J

    C)  12 J                                       

    D)  - 12 J

    Correct Answer: B

    Solution :

                    Loss in KE = work done = area of F-s curve \[=-\frac{1}{2}\times 3\times 4=-6\,J\]


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