5kg object oscillates at the end of a vertical spring that has a spring constant of2.4510 4 N/m. The effect of air resistance is represented by the...

A10.5kg object oscillates at the end of a vertical spring that has a spring constant of2.45104N/m. The effect of air resistance is represented by the damping coefficientb= 3.00 N·s/m.

(a) Calculate the frequency of the dampened oscillation. Hz

(b) By what percentage does the amplitude of the oscillation decrease in each cycle? %

(c) Find the time interval that elapses while the energy of the system drops to3.00%of its initial value. s