lecture28[1] - Centre of Mass Definition (review) Total...

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

View Full Document Right Arrow Icon
1 Physics 1D03 Serway 9.5, 9.6, 10.9 Centre of Mass • Definition (review) • Total momentum of a system of particles • Motion of the centre of mass For practice: Chapter 9, problems 41, 43; Chapter 10, problem 73 Physics 1D03 Review: Newton’s Second Law For a particle: (Net external force) = m a For a particle or a system of particles: (Net external force) = d p /dt (Net external impulse) = Δ p
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 Physics 1D03 Apply Newton’s Laws to objects that are not particles: F or F How will an extended body move (accelerate) when a force is applied at an arbitrary location? The motion of the centre of mass is simple; in addition, various parts of the object move around the centre of mass. e.g., Physics 1D03 M m m m i i i i i CM r r r Σ = Σ Σ = (Recall the position vector r has components x, y, z.) x CM m 1 m 2 m 3 Centre of Mass = i i CM r r m M Definition: or, r CM = dm M CM 1 r r For continuous objects,
Background image of page 2
3 Physics 1D03 Dynamics of a system of particles CM definition: = i i CM r r m M Differentiate with respect to time: total
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/14/2010 for the course ENGINEERIN 1D03 taught by Professor N.l.mckay during the Spring '10 term at McMaster University.

Page1 / 7

lecture28[1] - Centre of Mass Definition (review) Total...

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

View Full Document Right Arrow Icon
Ask a homework question - tutors are online