# Two blocks of masses m and 2m are connected through a wire of breaking stress S passing over a frictionless pulley.

Q: Two blocks of masses m and 2m are connected through a wire of breaking stress S passing over a frictionless pulley. The maximum radius of the wire to be used so that the wire may not break is

(a) $\displaystyle \sqrt{\frac{3 m g}{4 \pi S}}$

(b) $\displaystyle \sqrt{\frac{4 m g}{3 S}}$

(c) $\displaystyle \sqrt{\frac{4 m g}{3 \pi S}}$

(d) $\displaystyle \sqrt{\frac{ m g}{2 \pi S}}$

Ans: (c)