The amplitude of an oscillator decreases to 36.8% of its initial value in 10.0 s. What is the value of the time constant?
Time constant= m/b
The Attempt at a Solution
I'm not quite sure where to start with this... because the intitial value isn't known so how would I even get the amplitude?
I found a solution that used A(t)=A(0)e^(-kt) and did this: 0.368A(0)=A(0)e^(-10k) and solved for k, however that wasn't right and I'm wondering why they even thought to use that equation.. is it right?