2. An undamped oscillator with a mass of 25.0 g has an amplitude of 5.00 cm and a frequency of 12 Hz. When light damping is added by placing the oscillator in a uid, the amplitude decreases to 2.50 cm in 12 s. (a) What is the spring constant? (b) What is the time constant T = 2m/b and the damping constant I)? (c) How many cycles pass during these 12 s? (d) What percentage of the oscillator's energy is lost