A Copper Alloy Wire of Length 2

question 3

Multiple Choice

A copper alloy wire of length 2.0 m, cross sectional area 7.1 *10^-6 m², and Young's modulus 11 *10¹⁰ N/m², has a 200-kg load hung on it. What is its increase in length? (g = 9.8 m/s²)

• A) 0.50 mm
• B) 1.0 mm
• C) 2.5 mm
• D) 5.0 mm

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