Physics - Elasticity Question with Solution | TestHub

Wires $W_1$ and $W_2$ are made of same material having the breaking stress of $1.25\times {10}^9 \mathrm{N} {\mathrm{m}}^{-2}. {\mathrm{W}}_1$ and ${\mathrm{W}}_2$ have cross-sectional area of $8\times {10}^{-7}{ \mathrm{m}}^2$ and $4\times {10}^{-7}{ \mathrm{m}}^2$, respectively. Masses of $20 \mathrm{kg}$ and $10 \mathrm{kg}$ hang from them as shown in the figure. The maximum mass that can be placed in the pan without breaking the wires is _____$\mathrm{kg}$ (Use $\left.\mathrm{g}=10 \mathrm{m} {\mathrm{s}}^{-2}\right)$