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Question:
A 1200-kg car is being raised with a constant acceleration of 2.53 m/s2 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 N/m2. What is the change in length of the cable caused by lifting the car? A)8.4 mm B)8.4 cm C)4.9 mm D)4.9 cm E)4.9 m