A copper wire of length 1 meter, cross sectional area 7.1 X 10‑6 m2 and Young’s...

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A copper wire of length 1 meter, cross sectional area 7.1 X 10‑6 m2 and Young’s...

A copper wire of length 1 meter, cross sectional area 7.1 X 10‑6 m2 and Young’s modulus 11 X 1010 N/m2 has a mass load hung on it. If its increase in length is 1 mm, what is the value of the mass?

400kg

80kg

800kg

40kg

200kg

science physics

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