orbital velocity confusion. (1 Viewer)

[atBondi]

Is it not true that as radius increases, orbital velocity decreases?
and to find orbital velocity it is = length of orbit (2.pi.r) / period.

Because for some reason my results happen in the opposite way, as my radius increases, my orbital velocity also increases...?

so i gathered my results were dodgy, but now on this sheet with results already on it, i get the same trend... so can some1 explain?

Is it also possible to use keplers law, to check something?
for example, put r^3 / T^2 and it should be some constant for all of them?

If that works, i got a constant of, 0.015625 and 0.03786.... which seems quite close, or should they be exactly the same?

If what im saying makes no sense to anyone, i am willing to write up the table, so some1 can explain, but since the table is quite big, i havent done that.
Thanks. I'll be back on 2moro at about 4ish.

 

[cutemouse]

For the same planet r^3/T^2 is a constant.

Orbital velocity =

Must use SI units.

NB: Escape velocity =

 

[atBondi]

isnt orbital velocity 2.pi.r / t?

 

[stampede]

OP youre doin it as though the orbit is perfectly circular and the logical way you'd think of it via intuition.

Orbital velocity =

look up on the derivations of this formula to understand how they got to it and use it.


Edit: yes, with the r next to the pi.. like jm01 said (i just copied his image)

 

[cutemouse]

sorry yes, orbital velocity is indeed 2pi r / t

I got confused with angular velocity :S