Aerospace Engineering > GATE 2017 > Vibrations
A single degree of freedom spring-mass system of natural frequency 5 Hz is modified in the following manners:
Case 1: Viscous damping with damping ratio ζ=0.2 is introduced in parallel to the spring.
Case 2: The original undamped spring-mass system is moved to a surface with coefficient of friction, μ=0.01.
The ratio of the damped natural frequency for the cases 1 and 2 is given by _______ (in three decimal places).
Case 1: Viscous damping with damping ratio ζ=0.2 is introduced in parallel to the spring.
Case 2: The original undamped spring-mass system is moved to a surface with coefficient of friction, μ=0.01.
The ratio of the damped natural frequency for the cases 1 and 2 is given by _______ (in three decimal places).
Correct : 0.970 to 0.990
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