Answer:55.227
Step-by-step explanation:
Given data
mass
=13lb
spring stretches by
=4.5in=0.375 ft
g=
Now Spring constant K
mg=kx
k=
For critical damping 

and 

substituting values

c=55.227 lb.sec/ft
Here’s a written work of the question hope this helps
Answer:
is there any examples/
Step-by-step explanation:
Answer:0.84164
Step-by-step explanation:
Given

we know

Applying this identity we get




