ID:78673395 14.68 2 of 2 to Problem 14.68 n the This is the mass of the bell its
ID: 2078444 • Letter: I
Question
ID:78673395 14.68 2 of 2 to Problem 14.68 n the This is the mass of the bell itself plus the mass of the water Express your answer to two significant figures and include the appropriate units. itself with of its bell, a flexible structure on top of its body. The m= 17g Give Up jellyfish emits one jet right after the other, but we can get some insight into the jet system by looking at a single jet thrust. Figure shows a graph of the motion of one point in the wall of the bell for such a single jet; this is the pattern of a damped oscillation. The spring can be estimated to be 1.2 N/m. Correct nt for the bell By decrease over one period? Given this, what is the time constant for the damping? Express your answer to two significant figures and include the appropriate units. Deflection (cm) 0.6 0.3 t (s) 11 Value -0.3 -0.6 ContinueExplanation / Answer
Part B, we can see that amplitude becomes 0.15 from 0.6 in 1-0.25= 0.75s
So, A = Ao e^(-t/T)
0.15= 0.6 e^-(0.75/T)
ln (0.15/0.60) = - 0.75/T
- 1.386 = - 0.75/T
T = 0.75/1.386
= 0.54 s answer