In equilibrium the tensile stress to which a wire of radius r is subjected by attaching a mass ‘m’ is ____.
In equilibrium the tensile stress to which a wire of radius r is subjected by attaching a mass ‘m’ is ____.
(A) \(\frac{mg}{\pi r}\)
(B) \(\frac{mg}{2\pi r}\)
(C) \(\frac{mg}{\pi r^2}\)
(D) \(\frac{mg}{2\pi r^2}\)
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