Radian- the angle subtended at the centre of the circle by an arc of the circle, whose length is equal to the radius of the circle.
Angular displacement- the angle moved through relative to a specific axis.
Angular velocity-the rate of change of angular displacement with time.
Objects moving in a circle have changing velocity, which is always along the tangent of the circle. Any moving object at constant acceleration has a centripetal force acting on it.
Examples of centripetal forces:
- Jupiter obiting the sun has a centripetal force of gravitational…