Angular Momentum, (L): momentum = mass x velocity.
Angular momentum occurs in rotational movement
L (kgm2s-1) = Iω
angular momentum before = angular momentum after
Conservation of angular momentum
This video explains conservation of Angular Momentum through student demonstrations.
Impulse: change in momentum
Angular Impulse, ΔL: change in angular momentum
ΔL = TΔt
(small torque for long duration = large torque for small duration)
Work & Power
Work done = force x perpendicular distance… so…
Work done = torque x angle rotated W = Tθ
Power = force x speed… so…
Power = torque x angular velocity P = Tω