lecture23

# lecture23 - Definition(for a particle Angular Momentum Lrp...

This preview shows pages 1–4. Sign up to view the full content.

Angular Momentum Definition: p r L (for a particle) i i i p r L L (for a system of particles) Units: s J s m N s m kg L / ] [ 2 dt L d  F r v m v dt p d r p dt r d p r dt d dt L d compare with: dt p d F Angular momentum and second Newton's law sin rp L depends on the choice of origin, since it involves the position of vector of the particle relative to the origin L

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Conservation of angular momentum AB F BA F BA AB F F AB r BA r sin r BA BA AB AB r r sin sin BA AB F r sin rF 0 0 If f i ext L L dt L d 0 BA AB B A dt L d dt L d  compare with conservation of linear momentum When the external torque acting on a system is zero, the total angular momentum is conserved Consider two interacting particles A and B
Angular momentum for a rigid body rotation around a symmetry axis   I r m L L L mr Rmr L L L L L Rmr Rmv Rp L L i i iz z z z x x

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 10

lecture23 - Definition(for a particle Angular Momentum Lrp...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online