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. (Figure 1) shows the vertical acceleration of a cockatiel's body during one wing beat, consisting of an upstroke followed by a downstroke. Figure < 1 of 1 a, (m/s?) 50 0.02 1 (s) 0.06 0.08 0.10 -50 Upstroke Downstroke

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10
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. (Figure 1) shows the vertical
acceleration of a cockatiel's body during one wing beat,
consisting of an upstroke followed by a downstroke.
Figure
<1 of 1
a, (m/s?)
50-
%3D
1(s)
0.06 0.08 0.10
0.02
-504
Upstroke
Downstroke
Transcribed Image Text: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. (Figure 1) shows the vertical acceleration of a cockatiel's body during one wing beat, consisting of an upstroke followed by a downstroke. Figure <1 of 1 a, (m/s?) 50- %3D 1(s) 0.06 0.08 0.10 0.02 -504 Upstroke Downstroke
Part A
If the bird's mass is 99 g, what is the maximum net vertical force exerted on the bird?
Express your answer with the appropriate units.
HẢ
?
x•10"
- 3
F- 9.9 10
kg
Submit
Previous Answers Request Answer
Part 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? Note that the bird's weight, the force of gravity acting on it, is calculated using w = mg, a result that will be justified in Chapter 5.
Express your answer with the appropriate units.
(Far )max=
Value
Units
Submit
Request Answer
Transcribed Image Text:Part A If the bird's mass is 99 g, what is the maximum net vertical force exerted on the bird? Express your answer with the appropriate units. HẢ ? x•10" - 3 F- 9.9 10 kg Submit Previous Answers Request Answer Part 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? Note that the bird's weight, the force of gravity acting on it, is calculated using w = mg, a result that will be justified in Chapter 5. Express your answer with the appropriate units. (Far )max= Value Units Submit Request Answer
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