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A single degree of freedom system has a mass of 2 kg, stiffness 8 N/m and viscous damping ratio 0.02. The dynamic magnification factor at an excitation frequency of 1.5 rad/s is ______
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- 2
- 3.42
- 2.28
- 3
Correct Option: C
ω = 1.5 rad/s
| ωn = √ | = √ | = 2 rad/s | ||
| m | 2 |
ξ = 0.02
| MF = | |
| √[1 - (0.75)²]² + (2 × 0.02 × 0.75)² |
∴ M.F. = 2.28
