ME214StaticsWeek2_Chapter_2_11__2_15 - ME 214 Vector...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ME 214 Vector Statics Lecture 4, Chapter 2.11-2.15 Instructor: A Rezaei Today’s Objective: Students will be able to: a) Represent a position vector in Cartesian coordinate form, from given geometry. b) Represent a force vector directed along a line. c) determine an angle between two vectors, and, d) determine the projection of a vector along a specified line. POSITION VECTOR The position vector directed from A to B , r AB , is defined as r AB = {( X B X A ) i + ( Y B Y A ) j + ( Z B Z A ) k }m Please note that B is the ending point and A is the starting point. So ALWAYS subtract the “tail” coordinates from the “tip” coordinates! FORCE VECTOR DIRECTED ALONG A LINE a) Find the position vector, r AB , along two points on that line. b) Find the unit vector describing the line’s direction, u AB = ( r AB /r AB ). c) Multiply the unit vector by the magnitude of the force, F = F u AB . EXAMPLE 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/04/2010 for the course ME 214 taught by Professor Lipovetsky during the Summer '06 term at Cal Poly Pomona.

Page1 / 2

ME214StaticsWeek2_Chapter_2_11__2_15 - ME 214 Vector...

This preview shows document pages 1 - 2. Sign up to view the full document.

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