8 Circular Motion

Question 1

Angular displacement, θ

Answer 1

The angle through which an object turns with respect to centre of the circular path
θ=s/r
Where s is arc length and r is radius

Question 2

Angular velocity, ω

Answer 2

Rate of change of angular displacement
ω=dθ/dt
ω=2π/T
ω=v/r

Question 3

Centripetal acceleration

Answer 3

a = v^2/r = rω^2 = vω

Question 4

Centripetal force

Answer 4

F = ma = mv^2/r = mrω^2 = mvω