A Large 75-Kg Lighting Fixture Can Be Hung from Wires $0.70 \times 10 ^ { 11 } \mathrm {~Pa}$

question 80

Multiple Choice

A large 75-kg lighting fixture can be hung from wires of identical size and shape made of aluminum, brass, or copper. The values of Young's modulus for these metals are $0.70 \times 10 ^ { 11 } \mathrm {~Pa}$ (aluminum) , $0.91 \times 10 ^ { 11 } \text { (brass) , and } 1.1 \times 10 ^ { 11 } \text { (copper) }$
Which wire would stretch the least distance?

• A) copper
• B) aluminum
• C) brass
• D) They will all stretch the same distance.

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