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

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