NEET Sample Paper NEET Sample Test Paper-39

  • question_answer A solid cylinder of mass 3 kg is rolling on a horizontal surface with velocity \[4\,m{{s}^{-1}}.\] It collides with a horizontal spring of force constant \[200\,N{{m}^{-1}}.\]The maximum compression produced in the spring will be

    A)  0.2 m        

    B)  0.5 m

    C)  0.6 m        

    D)  0.7 m

    Correct Answer: C

    Solution :

     \[\frac{1}{2}\times 3{{(4)}^{2}}+\frac{1}{2}\times \frac{(3\times {{R}^{2}})}{2}\times {{\left( \frac{4}{R} \right)}^{2}}=\frac{1}{2}K{{x}^{2}}\]? \[\Rightarrow \] \[x=0.6\,m\]

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