MAE 242

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MAE 242 Dynamics Section I Dr. Kostas
Sierros
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Problem 1
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Problem 2
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Problem 3
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Problem 4
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Review 2

• Chapter 12 Kinematics of a particle
• Chapter 13 Kinetics of a particle Force and
  acceleration
• Chapter 14 Kinetics of a particle Work and
  energy
• Chapter 15 Kinetics of a particle Impulse and
  momentum
• Chapter 16 Planar kinematics of a rigid body

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Chapter 12 Kinematics of a particle

• Rectilinear kinematics
• Graphical solutions
• Curvilinear motion x,y,z
• Projectile motion
• Curvilinear motion n,t
• Curvilinear motion r, ?, z
• Absolute dependent motion of two particles
• Relative motion analysis using translating
  axes

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Chapter 13 Kinetics of a particle Force and
acceleration

• Kinetics
• Inertial coordinate systems

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Chapter 14 Kinetics of a particle Work and
energy

• Work of a force
• The principle of work and energy
• Power and efficiency
• Conservation of energy

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Chapter 15 Kinetics of a particle Impulse and
momentum

• Principle of linear impulse and momentum for a
  particle
• Conservation of linear momentum for particles
• Mechanics of impact
• Concept of angular impulse and momentum

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Chapter 16 Planar kinematics of a rigid body

• Types of rigid body planar motion
• Rigid body translation and motion about fixed
  axis
• Planar motion using absolute motion analysis
• Provide a relative motion analysis of velocity
  and acceleration using a translating frame of
  reference
• Instantaneous center of zero velocity
• Relative motion analysis of velocity and
  acceleration using a rotating frame of reference

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Chapter reviews
Chapter 12 pages 96-99 Chapter 13 pages
162-163 Chapter 14 pages 212-213 Chapter 15
pages 286-287 Chapter 16 pages 382-383
Book chapter reviews give you a good but brief
idea about each chapter
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General exam rules

• Midterm exam 2 will consist of 4 questions. 3
  questions must be solved. The 4th question will
  be a bonus question.
• Sub-questions may include statements of
  theoretical definitions
• Midterm exam counts for 15 of the total mark
• I will bring new formulae sheets. Come on time.
  Since the lecture theatre will be used for
  another class at 915, there will be no extra
  time
• Calculators with memory are not allowed
• NO MAKE UP EXAM THIS TIME

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Problem solving MUSTS

1. Read the problem carefully (and read it again)
2. Physical situation and theory link
3. Draw diagrams and tabulate problem data
4. Coordinate system!!!
5. Solve equations and be careful with units
6. Be critical. A mass of an aeroplane can not be 50
   g
7. Read the problem carefully

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Problems solved in class I
12.9, 12.22, 12.26, 12.42, 12.53, 12.65, 12.71,
12.83, 12.84, 12.100, 12.111, 12.153 13.5, 13.15,
13.34, 13.45, 13.51 14.10, 14.15, 14.17,
14.65 15.5, 15.6, 15.10, 15.13, 15.31, 15.54,
15.55, 15.59, 15.87, 15.90, 15.101, 15.109 16.1,
16.5, 16.19 16.43, 16.87
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Problems solved in class II
Solutions to all problems solved in class
will be posted today http//www.mae.wvu.edu/cair
ns/teaching.html Help session will take place on
Wednesday 24th of October between 500 600 in
????
Groups need to provide problems that they want to
solve again during help session
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STUDY HARD
ANDGOOD LUCK