What is the acceleration at point A on a rotating merry go round?

[Mugged]

Ok so I have this circular merry go round and its rotating with a constant angular velocity \omega. There is a point A on the merry go round moving radially outward with a constant velocity V. Let the center of the circular merry go round be O. I want to find the acceleration of point A with respect to the inertial frame O.

anyone have any ideas?

 

[zhermes]

Lets say point 'A' is--at a given time--a distance 'a' from the center ('O'). What is the acceleration at that point?

Hint:
http://en.wikipedia.org/wiki/Circular_motion