The damping ratio for a viscously damped spring mass system, governed by the relationship is \(m\frac{{{d^2}x}}{{d{t^2}}} + c\frac{{dx}}{{dt}} + kx = F\) given by

The damping ratio for a viscously damped spring mass system, governed

1.	The damping ratio for a viscously damped spring mass system, governed by the relationship is \(m\frac{{{d^2}x}}{{d{t^2}}} + c\frac{{dx}}{{dt}} + kx = F\) given by
A.	\(\sqrt {\frac{c}{{mk}}} \)
B.	\(\frac{c}{{2\sqrt {km} }}\)
C.	\(\frac{c}{{\sqrt {km} }}\)
D.	\(\sqrt {\frac{c}{{2mk}}} \)
Answer» C. \(\frac{c}{{\sqrt {km} }}\)