Comparing Approaches
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• Solution
and Narrative
Representation
(Experience)
Statement
• Visual
Representation
• Insert
Numbers
Representation
Interpretation
• Symbolic
• Check
Notation
Reasonable
ness
• Select
Physical
Principles/
Approach
• Build
Relationships
(Ideas)
Mathematical
(Formal) Solution
• Solve
• Check Units
• Check Limiting
Cases
QUANTITATIVE
Linear Kinematics
Newtonian Forces
Work-Energy
Energy Conservation
Momentum-Impulse
Momentum
Conservation
• Rotational
Kinematics
• Rotational Dynamics
• Rotational
Conservation
Principles
Physical Situation
• Conceptual
QUALITATIVE
An object moving down
a ramp
Applying the Problem Solving Framework
Basic Applications
Where we have been:
motion of rigid, non-rotating systems
frameworks
motion of rigid, rotating systems
Where we are going:
motion of non-rigid, non-rotating systems
motion of oscillatory systems
waves
emergent properties of many-body systems
Lab 5
Always record uncertainty and units
Never say “human error”
Write clearly
Be quantitative: avoid “not very accurate,” “really close”
Show/explain work/calculations
Use full sentences
Attach separate pages to ensure you have a full report, i.e.
discussion of error, diagram, further questions, difficult
procedures, etc.
In other classes lab write-ups are more precise
Ch12
Fluid Statics
What is a fluid?
What type of densities are there?
What is the definition of density?
How do you calculate the pressure under my feet?
FBD for a block of fluid
Calculus
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Atmosphere
Force on pool wall
A U-tube
What is the physical basis for Pascal’s Principle?
How can we describe it in terms of work?
Ch12
Buoyancy
State Archimedes’ Principle in your own words.
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Which has a larger buoyant
force: a submerged bowling
ball or a submerged soccer
ball of the same size?
A boat sits in water. What
determines how high it sits?
Will a boat sit higher in the
ocean or a freshwater lake?
Ch12
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Problems
When a large ice cube melts in a glass of water will the
water level rise or fall?
If a boat in a sealed channel were to dump a load of
iron into the channel would the water level rise
or fall?
Does the load of the bridge (below) increase or decrease as
a barge passes over it?
Ch12 Fluid Dynamics
How does conservation of mass apply in a fluid?
How does conservation of energy apply in a fluid?
What is laminar flow?
What is turbulence and viscosity?
Examples?
Demos?
A U-tube
A Venturi tube