If a spring of stiffiness

Question:

If a spring of stiffiness ' $\mathrm{k}$ ' is cut into two parts 'A' and ' $\mathrm{B}$ ' of length $\ell_{\mathrm{A}}: \ell_{\mathrm{B}}=2: 3$, then the stiffiness of spring ' $A$ ' is given by :-

 

  1. $\frac{5}{2} \mathrm{k}$

  2. $\frac{3 k}{5}$

  3. $\frac{2 k}{5}$

  4. $\mathrm{k}$


Correct Option: 1

Solution:

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