JEE Main & Advanced Physics Simple Harmonic Motion Question Bank Spring Pendulum

  • question_answer
    A spring having a spring constant ?K? is loaded with a mass ?m?. The spring is cut into two equal parts and one of these is loaded again with the same mass. The new spring constant is [NCERT 1990; KCET 1999; Kerala PMT 2004; BCECE 2004]

    A)            \[K/2\]                                    

    B)            \[K\]

    C)            \[2K\]                                      

    D)            \[{{K}^{2}}\]

    Correct Answer: C

    Solution :

                       Spring constant \[(k)\propto \frac{1}{\text{Length of the spirng (}l\text{)}}\] as length becomes half, k becomes twice is 2k.


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