A 0.5 kg mass on a spring (k = 50 N/m) is damped with a damping constant b = 2 kg/s. What is the damping ratio?
Correct answer: B. 0.2
- A. 0.1
- B. 0.2
- C. 0.3
- D. 0.4
Explanation
Damping ratio ζ = b / (2√(mk)) = 2 / (2 × √(0.5 × 50)) = 2 / (2 × √25) = 2 / 10 = 0.2.
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