A Large 75-Kg Lighting Fixture Can Be Hung from Wires

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 × 10¹¹ Pa (aluminum) ,0.91 × 10¹¹ (brass) ,and 1.1 × 10¹¹ (copper) .Which wire would stretch the least distance?

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