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AFMC AFMC Solved Paper-2010

  • question_answer
    One- fourth length of a spring of force constant k is cui away. The force constant of the remaining spring will be

    A) \[\frac{3}{4}k\]                               

    B) \[\frac{4}{3}k\]

    C) k                                             

    D) 4 k

    Correct Answer: B

    Solution :

    By using \[\text{k}\propto \frac{1}{l}\]Since, one-fourth length is cut away so remaining length is \[\frac{3}{4}\] th, hence k becomes \[\frac{3}{4}\]times ie, \[k'=\frac{4}{3}k\]


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