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NEET Sample Paper NEET Sample Test Paper-52

  • question_answer
    A body of mass 2 kg is moved from a point A to a point B by an external agent in a conservative force field. If the velocity of the body at the points A and B are 5 m/s and 3 m/s respectively and the work done by the external agents is -10 J, then the change in potential energy between points A and B is-

    A) 6 J                               

    B) 36 J

    C) 16 J                             

    D) None of these

    Correct Answer: A

    Solution :

    \[W=\frac{1}{2}m{{({{v}_{2}})}^{2}}-\frac{1}{2}m{{({{v}_{1}})}^{2}}+U\] \[-10=-16+U\]


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