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(a) A wire 4 m long and 0.3mm in diamete...

(a) A wire 4 m long and 0.3mm in diameter is stretched by a force of 100 N. If extension in the wire is 0.3 mm, calculate the potential energy stored in the wire.
(b) Find the work done is stretching a wire of cross-section `1mm^(2)` and length 2 m through 0.1 mm. Young's modulus for the material of wire is `2.0xx10^(11) Nm^(-2)`.

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(a) A wire 4 m long and 0.3 mm, calculate the potential energy stored in the wire. Young's modulus for the material of wire is 2.0xx10^(11) N//m^(2) .

(a) A wire 4 m long and 0.3 mm, calculate the potential energy stored in the wire. Young's modulus for the material of wire is 2.0xx10^(11) N//m^(2) .