JEE Main & Advanced Physics Work, Energy, Power & Collision Question Bank Work Done by Variable Force

  • question_answer A spring with spring constant k is extended from \[x=0\]to\[x={{x}_{1}}\]. The work done will be              [Orissa PMT 2004]

    A)             \[kx_{1}^{2}\]         

    B)             \[\frac{1}{2}kx_{1}^{2}\]  

    C)             \[2kx_{1}^{2}\]       

    D)             \[2k{{x}_{1}}\]

    Correct Answer: B

    Solution :

       

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