Would anyone be kind enough to explain the concept of centripetal (circular) motion to me? How accelerations are determined (i understand they are non constant); What factors affect this motion, and/or what factors relate to it. How do limits relate to this type of acceleration? Thank you. --- I understand the concept of this sort of acceleration. The speed remains constant throughout the cycles, however, the acceleration changes due tot he change in direction -- and thus a change in velocity. Howevever, i am not sure how frequency of the cycles affects e.g. tension (of a string, if a string is spinning with an attached rubber stopper for example), how mass affects frequency, and other relationships with frequency.