Numerical - Coefficient of viscous damper, given critically damped

Q.  Calculate coefficient of viscous damper, if the system is critically damped.
Consider the following data:

1. Mass of spring mass damper system = 350 kg
2. Static deflection = 2 x 10–3 m
3. Natural frequency of the system = 60 rad/sec
- Published on 11 Sep 15

a. 100.5 x 103 N-s/m
b. 80 x 103 N-s/m
c. 42 x 103 N-s/m
d. None of the above

ANSWER: 42 x 103 N-s/m

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    Discussion

  • Om Wade   -Posted on 06 Nov 20
    Mass= 350 kg (m)
    static def = 2*10^-3 (&)
    Nat freq =60 rad)se ( Wn)
    K= ?
    = Wn = v(k/m) : &= 2 vk*m
    v(k) =Wnv(m)
    K= 2 Wnv m* v m
    = 2* Wn *m
    = 2 *60*350
    = 42*10^3

  • Simranjit Kaur   -Posted on 16 Dec 18
    Can you please share this question how to solve it
  • shivraj   -Posted on 05 Sep 18
    i need all folders of mechanical to download in pdf formaat please

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