9. The adjacent graph shows the extension
The adjacent graph shows the extension (Δl) of a wire of length 1m suspended from the top of a roof at one end with a load W connected to the other end. If the cross sectional area of the wire is 10-6 m2 calculate the young’s modulus of the material of the wire
(a) 2×1011 N/m2
(b) 2×10–11 N/m2
(c) 3×10–12 N/m2
(d) 2×10–13 N/m2
Answer-a
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a