Two blocks of masses $m$ and $M$ are connected by means of a metal wire of cross-sectional area $A$ passing over a frictionless fixed pulley as shown in the figure. The system is then released. If $M = 2\, m$, then the stress produced in the wire is
Two blocks of masses $m$ and $M$ are connected by means of a metal wire of cross-sectional area $A$ passing over a frictionless fixed pulley as shown in the figure. The system is then released. If $M = 2\, m$, then the stress produced in the wire is
- [JEE MAIN 2013]
- A
$\frac{{2mg}}{{3A}}$
- B
$\frac{{4mg}}{{3A}}$
- C
$\frac{{mg}}{{A}}$
- D
$\frac{{3mg}}{{4A}}$
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