Lecture 02

# Lecture 02 - Lecture 02 Force vectors Vector operations...

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Statics: Lecture Notes for Sections 2.1-2.4 1 Lecture 02 * Force vectors, Section 2.1-2.4 Today’s Objectives Students will be able to : a) Resolve a 2-D vector into components. b) Add 2-D vectors using Cartesian vector notations. 2

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Statics: Lecture Notes for Sections 2.1-2.4 2 Reading Quiz 1. Which one of the following is a scalar quantity? A) Force B) Position C) Mass D) Velocity 2. For vector addition you have to use ______ law. A) Newton’s Second B) the arithmetic C) P l’ 3 C) Pascal’s D) the parallelogram Application Of Vector Addition There are four concurrent cable forces acting on the bracket. How do you determine the resultant force acting on the bracket ? 4
3 SCALARS AND VECTORS (Section 2.1) Scalars Vectors Examples: mass volume length force velocity Examples: mass, volume, length force, velocity Characteristics: It has a magnitude It has a magnitude (positive or negative) and direction Addition rule: Simple arithmetic Parallelogram law Special Notation: None Bold fon a line an 5 Special Notation: None Bold font , a line, an arrow or a “carrot” In the PowerPoint presentation vector quantity is represented Like this (in bold , and italics ). Concept of Force as Vector Line of Action Length = Magnitude Head = Sense Tail = Point of Application Sense: Push or Pull ? 6

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Lecture 02 - Lecture 02 Force vectors Vector operations...

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