the ratio of the lengths of two wires A and B of same materials is 1:2and the ratio of their diameter is 2:1.They are stretched by the same force, then the ratio of increase I n length will be
Hello Aspirant,
Stress=Fa
a=πr2
a∝r2
a1a2=(r1r2)2=(21)2
⇒4
since the wires are made of same material so there youthful's modulus will be same.
Likewise the power applied and the region of cross segment is same(because span is same)
S1S2=F/a1F/a2=(a2a1)=14
Proportion of pressure is 1 : 4
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All the best