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unregistered
01-13-2006, 07:55 AM
Hello, does anyone know how to convert linear velocity to angular velocity?

Specifically, cm/s to rad/s or rpm?

THANK YOU

ncstagger
01-13-2006, 08:21 AM
My problem is to find the angular velocity in rpm's that corresponds to the linear velocity of 15cm/s.

Please see if my method is sound here...

I measured the diameter of my circle and it is 7.46cm.

This gives a circumference of 23.42cm (pi*diameter).

Knowing that 1 revolution (circumference) is equal to 6.28 radians I can now have a conversion factor of 6.28 radians = 23.42 cm.

So I simply multiply the 15 cm/s by 6.28rad/23.42cm and obtain 4.03 radians/s.

This is now a common conversion to rpm and results in 38.5 rpm.

Corrections/input welcome!

sexy_caylee_91
05-19-2006, 07:56 PM
What is the defination to Linear velocity?

Mrs X
05-21-2006, 02:37 PM
My problem is to find the angular velocity in rpm's that corresponds to the linear velocity of 15cm/s.

Please see if my method is sound here...

I measured the diameter of my circle and it is 7.46cm.

This gives a circumference of 23.42cm (pi*diameter).

Knowing that 1 revolution (circumference) is equal to 6.28 radians I can now have a conversion factor of 6.28 radians = 23.42 cm.

So I simply multiply the 15 cm/s by 6.28rad/23.42cm and obtain 4.03 radians/s.

This is now a common conversion to rpm and results in 38.5 rpm.

Corrections/input welcome!

This sounds about right. My understanding of rheometry is that the linear velocity is measured at an exact tangent to the outside of the disk. At 15cm/s, it takes 1.56s to complete 1 revolution, which is 38.46rpm.

i.e. 23.42cm/15cmpersec = 1.56seconds per revolution.

and 60seconds/1.56seconds = 38.5revolutions per minute.

For these sorts of experiments, it always pays to have a look at what is actually happening to your sample, and have a think about what the approximate answer should be. If you get an answer that is close, then you are probably on the right track.

Unregistered
10-21-2006, 03:52 PM
What is the defination to Linear velocity?
Linear velocity is velocity along a line

jzorrill
05-15-2007, 06:19 PM
ssuming the inside diameter of the colum is 4 inches, calculate the lenear velocity of the air at the flooding point

Buba bigz
11-14-2007, 04:29 PM
what is linear valocity ???????(definition)

Unregistered
11-26-2007, 09:28 PM
What is linear velocity? Can someone please give me the definition?

Unregistered
11-27-2007, 12:28 PM
linear velocity is basically the velocity of an object traveling in a straight line, where as angular velocity is the velocity of a obfect moving in a circular path. To convert velocity to angular velocity you use the equation v=rω, where 'v' is linear velocity and 'ω' is angular velocity and r is the radius of the circluar path

Moe
09-07-2008, 07:15 PM
My problem is to find the angular velocity in rpm's that corresponds to the linear velocity of 15cm/s.

Please see if my method is sound here...

I measured the diameter of my circle and it is 7.46cm.

This gives a circumference of 23.42cm (pi*diameter).

Knowing that 1 revolution (circumference) is equal to 6.28 radians I can now have a conversion factor of 6.28 radians = 23.42 cm.

So I simply multiply the 15 cm/s by 6.28rad/23.42cm and obtain 4.03 radians/s.

This is now a common conversion to rpm and results in 38.5 rpm.

Corrections/input welcome!
Hi, whoever you are...you really saved mt neck because I have been stuck on this one problem for the past hour and a half. Thanks to you, you have helped me defeat this stupidly easy equation :) god bless you

Unregistered
10-25-2008, 04:42 PM
this is all so confusing...

Unregistered
08-20-2009, 04:41 PM
i need help figuring out this problem: An object is traveling aroud a circle with a radius of 2 meters. If in 20 seconds the object ravels 5 meters, find the linear and angular velocity of the object.

Unregistered
01-10-2010, 01:04 PM
everything is actually much simpler,