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December 14th, 2010, 03:38 AM   #1
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what is the angular speed ?

[color=#0000BF]what is the angular speed ?[/color]Angular speed is the speed of the angular velocity


[color=#0000BF]what is the unit of the angular speed ?[/color]rad/s

[color=#0000BF]show that relation btween the angular and liner speed is given by v=?r ?[/color]
Positive relationship

[color=#000080]4 - The diameters of the main rotor and tail totor of a single engine helicopter are 7.6 m and 1.02 m, respectively . the respective rotational speeds are 450 rev/min and 4138 rev/min .Calculate the speed of the tips of both rotors?[/color]
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December 14th, 2010, 06:18 AM   #2
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Re: what is the angular speed ?

Angular speed is the rate at which an object spins or rotates, usually given in revolutions per second.

A common unit in physics for angular speed is radians per second.

An arc length s is related to the radius and angular displacement by:



Differentiate with respect to time t:





4. The speed of the tip of the main rotor is:



The speed of the tip of the tail rotor is:

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December 14th, 2010, 10:52 AM   #3
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Re: what is the angular speed ?

thanks so much
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December 14th, 2010, 11:00 AM   #4
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Re: what is the angular speed ?

How you got 3.8
and 0.51
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December 14th, 2010, 11:48 AM   #5
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Re: what is the angular speed ?

By taking the diameter and dividing by 2 to get the radius.
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