# Circular Motion

#### Chapter 6 - Circular Motion

When an object moves in a circular path, we can think of its motion in terms of linear quantities or angular quantities. In the GCE A Levels, we only need to understand the concepts of arc length and angular velocity. This video will introduce these quantities and also their relationship with the corresponding linear quantities.

To further describe an object in circular motion, we can also consider its period and frequency. The GCE A Levels requires us to relate angular velocity, period and frequency together and to interpret them. This video will discuss these concepts.

In the GCE A Levels, we are required to understand how an object can move in a circular path. This video analyses an object in circular motion, and explains the reason why there is a resultant force towards the centre of the circular path. This force is the centripetal force which creates a centripetal acceleration.
A large fraction of circular motion questions in the GCE A Levels involve analysing uniform circular motion. This video discusses the methodology to do this.
In the GCE A Levels, we may need to analyse objects in non-uniform circular motion. This video discusses a systematic way to do this.
Some problems in the GCE A Levels require us to analyse objects moving in vertical circular motion, where there may be a critical point to clear. These may include inverted loops or humps. This video will discuss how to find the velocity requirements for these objects to successfully complete their circular motions.