1. The problem statement, all variables and given/known data A student gets a 3 kg mass to oscillate up and down on bottom of a light vertical spring by pulling her hand up and down on the top end of the spring. The spring is a real spring with a spring constant of 89 N/m and a damping constant of 0.5 N sec/m. 2. Relevant equations (a) At what approximate frequency should the student move her hand up and down to get the maximum motion from the mass with the minimum motion of her hand? HELP: What approximately driving force frequency gives the greatest motion for a driven harmonic oscillator? HELP: Notice that we're asking for the frequency, f, not the angular frequency, ω. I got this answer correct. I took the Fo=1/T= (1/2pi)(sqrt(k/m))=(1/2pi)(sqrt(89/3))=.866 Now part B is what i am having trouble with. (b) The student now stops moving her hand and the mass slowly comes to rest. How long after she stop shaking her hand will it take for the amplitude of the mass to reach one half its maximum amplitude? HELP: What is the formula for the maximum applitude of a object on a damped spring as a function of the damping constand and the mass of the object? HELP: Remember from math class that if y = ex, then ln(y) = x. HELP: If you would like to just type in the formula for this answer instead of calculating it out, you could look at some of the functions available in the "Instructions" link below Now i noticed that the help gave a formula that I have yet to see in the book which really threw me off. y=ex then ln(y)=x. That is not in the section of damped oscillations or antyhing around that. if anyone knows what that equation is trying to infer let me know. because i tried looking for the max amplitude formula and i got A=Aoe superscript -bt/2m 3. The attempt at a solution Stated above.