I figured it out, so no need to reply anymore. Thanks though! And Spinnor it is a Classical Mechanics course. It is a question dealing with vector components in Spherical coordinates.
1. A Ball is in a frictionles tube that is rotating with a constant angular velocity \omega. The ball is initially held in place a distance r0 from the pivot by a string which breaks at t=0. If the radial coordinate of the ball from the origin is r(t), find r(t).
I am having a very hard to...