A) \[k=\frac{YA}{l}\]
B) \[k=\frac{2YA}{l}\]
C) \[k=\frac{YA}{2l}\]
D) \[k=\frac{Yl}{A}\]
Correct Answer: A
Solution :
\[Y=\frac{F/A}{\Delta l/l}\] \[\Rightarrow \] \[F=YA\frac{\Delta l}{l}\] ...(i) If\[k\]is spring constant, \[F=k\Delta l\] ... (ii) Comparing Eqs. (i) and (ii), we get \[k=\frac{YA}{l}\]You need to login to perform this action.
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