Answered: a, (m/s²) 50+ t (s) 0.06 0.08 0.1o 0.02…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

In researching the forces that act on flying birds, scientists studied the motion of cockatiels’ bodies as they fly in horizontal flight. As the birds beat their wings, their bodies move up and down. Given is the vertical acceleration of a cockatiel’s body during one wing beat, consisting of an upstroke followed by a downstroke.

a. If the bird’s mass is 87 g, what is the maximum net vertical force exerted on the bird?
b. The bird is held in level flight due to the force exerted on it by the air as the bird beats its wings. What is the maximum value of this force due to the air?

a, (m/s²)
50+
t (s)
0.06 0.08 0.1o
0.02
-50 -
Upstroke
Downstroke
FIGURE P4.68

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