A hummingbird hovers by exerting a downward force on the air equal, on average, to its weight. By Newton's third law, the air exerts an upward force of the same magnitude on the bird's wings. Find the average mechanical power (in W) delivered by a 3.40 g hummingbird while hovering if its wings beat 75.0 times per second through a stroke 3.58 cm long. Hint : To find the average power per stroke, calculate the work done each stroke and divide by the time per stroke.
A hummingbird hovers by exerting a downward force on the air equal, on average, to its weight. By Newton's third law, the air exerts an upward force of the same magnitude on the bird's wings. Find the average mechanical power (in W) delivered by a 3.40 g hummingbird while hovering if its wings beat 75.0 times per second through a stroke 3.58 cm long. Hint : To find the average power per stroke, calculate the work done each stroke and divide by the time per stroke.
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 33P
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A hummingbird hovers by exerting a downward force on the air equal, on average, to its weight. By Newton's third law , the air exerts an upward force of the same magnitude on the bird's wings. Find the average mechanical power (in W) delivered by a 3.40 g hummingbird while hovering if its wings beat 75.0 times per second through a stroke 3.58 cm long.
Hint : To find the average power per stroke, calculate the work done each stroke and divide by the time per stroke.
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