# Kinematics of Rotational Motion

1. Dec 6, 2009

### miamirulz29

1. The problem statement, all variables and given/known data
A turntable that is initially at rest is set in
motion with a constant angular acceleration
α.
What is the magnitude of the angular ve-
locity of the turntable after it has made one
complete revolution?

2. Relevant equations
w(omega)^2 = w(omegeInitial)^2 +2α(delta)θ

3. The attempt at a solution
So then I used that because one revolution is equal to 2pi, I said w = sqrt. (4piα).
It is multiple choice and that is not one of the choices.
Here are the choices:
1. k~ωk = 2 π α
2. k~ωk = √2 π α
3. k~ωk = 2 α
4. k~ωk = 2√π α
5. k~ωk = √2 α
6. k~ωk = 4 π α
What am I doing wrong? Sorry if it is tough to read.

2. Dec 6, 2009

### rock.freak667

Not sure if you typed out the choices properly,but you can simplify you answer even more since √(ab) = (√a)*(√b)

3. Dec 6, 2009

### miamirulz29

Oh, I forgot to simplify, do it would be 2√π α

4. Dec 6, 2009

### rock.freak667

if you mean 2√(πα), then yes

5. Dec 6, 2009

### miamirulz29

Yeah, thats what I meant. BTW, how do you type those symbols (I copy and pasted the symbols I could).

6. Dec 6, 2009

### rock.freak667

If you meant LaTex, in the reply box click on the [itex]\sum[/tex] symbol and you will get the list of symbols.