When we first started this mechanics course, we talked about displacement, velocity, and acceleration. These were useful for linear dynamics; with rotational dynamics, we have new elements that we have to think about, and those are frequency, period, and radius. These, combined with our knowledge from the earlier courses, will help us in learning other topics such as centripetal force. As we stated before, its still important to remember your standard SI units (meters, seconds, kilograms). Just like with the first half, well next see what we can do with these basic elements of rotational dynamics.
The distance around a circular path is the circumference.
Frequency is the number of revolutions or cycles which occur each second. The symbol is f, and the units are 1/s, or Hertz (Hz).
Period, the inverse of frequency, is the amount of time it takes for each revolution or cycle. The symbol for period is T, and units are seconds (s).
Objects moving in uniform circular motion (circular motion at constant speed) are accelerating because their direction is always changing, causing their velocity to continuously change.
The direction of this acceleration is toward the center of the circular path. This type
of acceleration is known as a centripetal acceleration (center-seeking). The force causing a centripetal acceleration is known as a centripetal force.
Uniform Circular Motion
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book includes a comprehensive review of the key AP Physics C concepts and targeted strategies for acing every section of the exam. Additionally, the book includes two full length practice tests with full answer explanations.
The book offers a complete review of your AP course, strategies to give you the edge on test day, and plenty of practice with AP-style test questions. It includes 2 full length practice exams modeled on the real test, 3 separate plans to fit your study stle, review material updated to the most recent tests, and all the terms and concepts you need to know.