Answered: Deflection (cm) 0.6+ 0.3- -t (s) -0.3…

Name: A jellyfish can propel itself with jets of water pushed out of its bel
Uploaded: 2024-03-20T06:57:37.000Z
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Description: A jellyfish can propel itself with jets of water pushed out of its bell, a flexible structure on top of its body. The elastic bell and the water it contains function as a mass-spring system, greatly increasing efficiency. Normally, the jellyfish emit

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section: Chapter Questions

Problem 16E: What speed does the ball in Exercise 15 have in falling 3.5 s?

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A jellyfish can propel itself with jets of water pushed out of its bell, a flexible structure on top of its body. The elastic bell and the water it contains function as a mass-spring system, greatly increasing efficiency. Normally, the 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 1) 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 constant for the bell can be estimated to be 1.2 N/m. The period is T=0.75 s and the mass is 17 g.

Consider the peaks of positive displacement in the graph. By what factor does the amplitude 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)
-0.3
-0.6-

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