A 1200-Kg Car Is Being Raised at a Constant Speed

question 39

Multiple Choice

A 1200-kg car is being raised at a constant speed if 25 cm/s by a crane,using a 20-m long steel cable that is 1.5 cm in diameter.Young's modulus for steel is 2.0 × 10¹¹ Pa.What is the change in length of the cable caused by the car?

• A)6.7 mm
• B)6.7 cm
• C)3.3 mm
• D)3.3 cm
• E)3.3 m

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