A 1200-Kg Car Is Being Raised with a Constant Acceleration

Multiple Choice

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