Hello, I'm in desperate need of some help with a problem regarding spiral motion. If a particle moves along a spiral path by degrees θ in time t with intial angular velocity ωo, can the rotational kinematic equation (θ = ωot + (1/2)[itex]\alpha[/itex]t2) still be applied? I'm trying to solve for angular acceleration [itex]\alpha[/itex]. (See link for spiral picture) http://mathworld.wolfram.com/ArchimedesSpiral.html So in other words, is spiral motion any different than standard rotational motion with regards to calculating angular velocity/acceleration? It seems I would need to account for arc length (s) and curvature (k) using the equations in the posted link. Any help would be greatly appreciated.