Wires W1 and W2 are made of same material having the breaking stress of 1.25&time....

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Wires W1 and W2 are made of same material having the breaking stress of 1.25×109 N/m2.W1 and W2 have crosssectional area of 8×10-7 m2 and 4×10-7 m2, respectively. Masses of 20 kg and 10 kg hang from them as shown in the figure. The maximum mass that can be placed in the pan without breaking the wires is kg. (Use g=10 m/s2 )
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