# Calculate cangular momentum vector L

1. Jun 23, 2012

### classicphysic

1. The problem statement, all variables and given/known data

calculate the angular momentum vector L

2. Relevant equations

r = rr(hat) r=√(xsquared + y squared) r(hat) = <cosθ, sinθ>
v = r(dot)r(hat) + rθ(dot)θ

3. The attempt at a solution
L = mv X r

2. Jun 24, 2012

### tiny-tim

welcome to pf!

hi classicphysic! welcome to pf!
yes, you do need m!

so just call it "m", and leave it in the answer

3. Jun 24, 2012

### classicphysic

i am waiting for the help people...checking it every hour but no body answers it

4. Jun 24, 2012

### DeIdeal

What more do you need?

And I really don't think this counts as "Advanced Physics". So, wrong forum?

5. Jun 24, 2012

### tiny-tim

hi classicphysic!
posting it when the americans are about to go to bed, and the europeans are fast asleep :zzz:, isn't the best time, if you want a quick answer

(and posting it in the right forum would make it more likely that the right people see it)

btw, you don't need to keep checking … you should receive an email notification of each new post in any thread you've posted in