General Studies · Mechanical Vibrations
For an undamped system with η = 0, the dynamic magnification factor or amplification factor (AF) is given by which of the following expressions? (where η is the damping ratio, ω is the natural frequency, and λ is the excitation frequency of the harmonic force)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1AF = 1|1 + (ω2/λ2)|
- 2AF = 1|1 - (ω2/λ2)|
- 3AF = 1|1 + (λ2/ω2)|
- 4AF = 1|1 - (λ2/ω2)|✓
Correct answer
AF = 1|1 - (λ2/ω2)|
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