A Steel Wire,3

question 6

Multiple Choice

A steel wire,3.2 m long,has a diameter of 1.2 mm.The wire stretches 1.6 mm when it bears a load.Young's modulus for steel is 2.0 x 1011 n/m².The mass of the load is closest to:

• A)12 kg
• B)16 kg
• C)20 kg
• D)24 kg
• E)28 kg

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