physics 108 introduction to engineering/physics. objectives of physics 108 learn about the...
DESCRIPTION
Why Active/Collaborative Learning? Active Countless studies have shown improvement in: short-term retention of material, long-term retention of material, ability to apply material to new situations Collaborative Engineering teams are used in industry and usually make the best use of timeTRANSCRIPT
Physics 108Introduction to
Engineering/Physics
Objectives of Physics 108
Learn about the different engineering disciplines
Learn about professionalism in engineering
Become a better problem solverDevelop teaming skills
Why Active/Collaborative Learning?
ActiveCountless studies have shown improvement in:
short-term retention of material,long-term retention of material,ability to apply material to new situations
CollaborativeEngineering teams are used in industry and
usually make the best use of time
Why Physics?
Engineering
MechanicalElectrical Civil
AstronomyArchitecture
Consulting
Review
Units of Measure
See Notes
Chapter 1Introduction to
Vectors
Scalar Quantitya quantity that has magnitude but not direction
Vector Quantity a quantity that has both magnitude and direction
Vector Quantitiesforce
e.g. 20 Newtons Eastwardvelocity
e.g. 20 meters/second North
acceleratione.g. 9.8 m/s2 downward
Scalar Quantitieslength
e.g. 93,000,000 milesmass
e.g. 180 kgspeed
e.g. 186,000 miles/second
Vectoran arrow drawn to scale used to represent a vector quantity
vector notationF
Resultantthe sum of vectors
Methods of Vector Additiontip-to-tail method (polygon method)
component method
Tip-to-Tail MethodExample 1: Add these vectors using
the tip-to-tail method.
A B+
Tip to Tail Method
C
A
BA B C+ =
Component Method
A
xA
x
y
yA
Notes on Components
xA
yAA
Components are vectors
A A A yx
Lengths of Components
xA
yAA
Ax = A cos
Ay = A sin
If Components are Known
22y
2x A A A
)/A(ATan xy1
Unit Vectormagnitude of 1 and a direction
k ,j ,i
kRjR iRR zyx