A 1200-Kg Car Whose Springs Have an Effective Force Constant

Multiple Choice

A 1200-kg car whose springs have an effective force constant of 2.66 × 10⁶ N/m is moving along the highway with its tires out of balance. The tires have a radius of 40.6 cm. At what speed will the driver experience large vibrations?

A) 19.1 m/s
B) 22.2 m/s
C) 18.9 m/s
D) 17.4 m/s
E) 25.0 m/s