2. Circular Motion

Question 1

Angular Displacement

Answer 1

θ = 2π/T radians

Question 2

Angular Speed , ω

Answer 2

Angular displacement per second (rads^-1)

Question 3

Centripetal Acceleration

Answer 3

Acceleration towards the centre of the circle

Question 4

Centripetal Force

Answer 4

Force pulling an object towards the centre of a circle

Question 5

Sideways Friction

Answer 5

Friction that causes slipping and skidding

Question 6

For no sideways friction on tyres due to a road..

Answer 6

The horizontal components of the support forces on each tyre must act as the centripetal force

Question 7

Uniform Circular Motion

Answer 7

An object rotating at a constant rate