11.
What effect does a decrease in mass have on the frequency of a system?
12.
What effect does a decrease in the stiffness of the system have on the natural period?
13.
Why does the amplitude of free vibration gradually diminish in practical systems?
14.
Why is it important to find the natural frequency of a vibrating system?
15.
Can the energy method be used to find the differential equation of motion of all single
degree-of-freedom systems?
16.
What is the use of the logarithmic decrement?
17.
What is critical damping, and what is its importance?