Linear velocity to angular velocity

[unregistered]

Hello, does anyone know how to convert linear velocity to angular velocity?

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

THANK YOU

[ncstagger]

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]

What is the defination to Linear velocity?

[Mrs X]

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]

What is the defination to Linear velocity?
Linear velocity is velocity along a line

[jzorrill]

ssuming the inside diameter of the colum is 4 inches, calculate the lenear velocity of the air at the flooding point

[Buba bigz]

what is linear valocity ???????(definition)

[Unregistered]

What is linear velocity? Can someone please give me the definition?

[Unregistered]

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]

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]

this is all so confusing...

[Unregistered]

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]

everything is actually much simpler,

angular velocity (rad/s) = linear velocity (m/s) / radius(m)
=)

[Unregistered]

So, wait. What is the definition of Linear Velocity?

[Unregistered]

Relation between angular velocity and radious