When Driving Over a Washboard Speed Bumps,certain Speeds Make the Bumps

question 120

Multiple Choice

When driving over a washboard speed bumps,certain speeds make the bumps less "bumpy." Suppose your car has mass of 1000 kg and the critical damping constant of the shock absorbers is 12000 kg/s,what is the "ideal speed" to drive across the bumps assuming that the bumps are 0.3 m apart? Hint: Find the decay time for the critically damped shock absorbers.

• A)1.2 m/s
• B)2.4 m/s
• C)3.6 m/s
• D)4.8 m/s
• E)6 m/s

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