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anygoal [31]
2 years ago
6

Which statement is not true about plasm

Physics
2 answers:
Maslowich2 years ago
7 0
There is no statement
Ivahew [28]2 years ago
6 0
Where’s the statements?
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An airplane propeller is 2.68 m in length (from tip to tip) and has a mass of 107 kg. When the airplane's engine is first starte
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Answer:

a)30.14 rad/s2

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e)84 kW

Explanation:

If we treat the propeller is a slender rod, then its moments of inertia is

I =\frac{mL^2}{12} = \frac{107*2.68^2}{12} = 64.04 kgm^2

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b. 5 revolution would be equals to 10\pi rad, or 31.4 rad. Since the engine just got started

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\omega = \sqrt{1893.5} = 43.5 rad/s

c. Work done during the first 5 revolution would be torque times angular displacement:

W = T*\theta = 1930 * 31.4 = 60633 J

d. The time it takes to spin the first 5 revolutions is

t = \frac{\omega}{\alpha} = \frac{43.5}{30.14} = 1.44 s

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P = \frac{W}{t} = \frac{60633}{1.44} = 41991 W or 42 kW

e.The instantaneous power at the instant of 5 rev would be Torque times angular speed at that time:

P_i = T*\omega = 1930*43.5=83983 W or 84 kW

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I hope this enough to help you!
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3 years ago
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