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A typical flying insect applies an average force equal to twice its weight during each downward stroke while hovering. Take the mass of the
Question
A typical flying insect applies an average force equal to twice its weight during each downward stroke while hovering. Take the mass of the insect to be 7.0g , and assume the wings move an average downward distance of 1.5cm during each stroke. Assuming 117 downward strokes per second, estimate the average power output of the insect.
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Physics
3 years
2021-09-03T18:11:08+00:00
2021-09-03T18:11:08+00:00 1 Answers
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Answer:
Average power = 0.240Watts
Explanation:
The insect requires double the force on its wings to counteract the gravitational force pulling it down.it generates upward force as below
Upward Force=2Gravitational force
force =2x(mass x gravitational pull)
F=(0.007×9,8)x 2
F=0.137 Nm
Power generated is =work/time
power =force *displacement/time
convert 1.5cm to SI units meters=0.015meters
displacement in one second is=0.015 x number of strokes
displacement =0.015*117
displacement =1.755 meters
power=(0.137*1.755)/1second
power=0.240 Watts