Rigid Body Mechanics (HL Only)

Question 1

What are the angular quantities of the linear quantities of:

Position
Linear Velocity
Acceleration

Answer 1

Position –> Angle (θ)

Linear Velocity –> Angular Velocity (ω)

Acceleration –> Angular Acceleration (α)

Note: these can be used to do SUVAT with rotating bodies

Question 2

What formula relates angular quantities with linear quantities?

Answer 2

s = θr

v = ωr

a = αr

Question 3

Define Torque

Answer 3

Force times the perpendicular distance between the line of action of
the force and the axis

Question 5

What are the two Torque formulas

Answer 5

τ = Fr sin(θ)

τ = Iα