A metal sphere with a mass of 4.80 kg oscillates at the end of a vertical spring with a spring constant of 1.60 ✕ 104 N/m. The motion is damped by air resistance, and the damping coefficient is b = 3.00 N · s/m. (a) Calculate the frequency of the dampened oscillation.(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 to 2.50% of its initial value.