# Centripetal Acceleration with infinite Radius?

1. Sep 27, 2011

### litzkrieg

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

Find centripetal acceleration given speed is 38m/s and radius is infinity large

3. The attempt at a solution

So The answer would get infinitely smaller so is zero the best answer?

2. Sep 27, 2011

### rock.freak667

Re: Centripetal Acceleration with infinite Radius??

I would say so, but usually even if it was considered infinitely large it would still have a centripetal acceleration e.g. r = 40 km.

However, how the question states it, r→ ∞ so v2/r → 0.