Technological Impacts

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January 7, 2008
1. F x d W 22 lbs x 10 ft W 220
ft-lbs.
QUIZ 5 minutes
2. F x d W 200 lbs x d 20,000 ft-lbs.
200 lbs. 200 lbs. d 100 ft.

• INSTRUCTIONS Write the appropriate equation and
  SHOW ALL WORK.
• Your book bag has 22 pounds of books in it.
  Carrying it from the first floor to the second
  floor of your house, you lift it a distance of 10
  feet. How much work is done?
• A physical therapy doctor told his 200-lb patient
  to do 20,000 ft-lbs of work each day to
  rehabilitate his leg. The patient decides to
  climb a hill to perform this work. How high does
  the patient need to climb in order to meet his
  goal?
• What is the fuel efficiency of a car that uses 15
  gallons to travel a distance of 300 miles?

• Fuel Efficiency
• Output 300 miles
• Input 15 gallons
• Efficiency ?

Wo / Wi Eff 300 mls / 15 gal Eff 20 mpg
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MID-SEMESTER EXAM

• Thursday and Friday of this week.
• Thursday Multiple-choice and Short Answers.
• Friday Design problem and drafting.
• REVIEW
• Monday U1-3C Comprehensive Test
• Tuesday Drafting
• Wednesday Questions, Miscellaneous, Study Time

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LOOSEN YELLOW KNOB
ADJUST BLACK KNOB
TIGHTEN YELLOW KNOB
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45
30-60
TOP
RIGHT
FRONT
FRONT
TOP
RIGHT
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MATERIALS
TECHNOLOGY
IRON AGE
SOCIETY
RENAISSANCE
INFO. AGE
BRONZE AGE
BRONZE
STEEL
INDUST. AGE
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HISTORY
ARTIFACT
INNOVATE
IMPROVISE
INVENT
TIMELINE
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A
D
B
C
C
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• Great Britain
• Access to the sea and world markets.
• Abundance of farmers willing to move to cities
  and work in factories.
• Developed practical use of science.

1. Loss of craft tradition.
2. Child labor.
3. Unhealthy working conditions.

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1950
The general trend has been positive. This sector
saw a slow increase in workers from 1700 to 1900,
then an exponential increase from 1900 to 2000.
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D
H
G
A
I
E
F
B
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• Safety is the product safe to use?
• Reliability will it work consistently over
  time?
• Cost is it affordable?
• Quality Control does it meet customer
  requirements?
• Environmental Concerns does it harm the natural
  or human environment negatively?
• Manufacturability can it be made?
• Maintenance how easily can it be maintained or
  upheld?
• Ergonomics how efficiently can the human body
  utilize it?
• 1. Creativity able to think outside the
  box and create newly
• 2. Resourcefulness able to meet
  situations and devise ways and means
• 3. Ability to think abstractly holding
  complex mental images in mind

LINEAR
ROTATIONAL
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1. Information 4. Energy 7. Tools and
Machines 2. Materials 5. Capital (Money) 3.
Time 6. People
Designs can ALWAYS be refined and improved.

1. Design is the result of a formal, sequential
   process.
2. Design is driven by profit motive and market (
   or not).
3. Design is the result of goal-oriented research.
4. Designs must be continually checked, refined, and
   improved

1. Natural found in nature
2. Synthetic human-made
3. Composite mixture of natural and synthetic

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The systematic application of scientific,
mathematical, and technical principles that
yields a tangible end product that meets our
needs and desires
Minimizing the likelihood of undesired outputs
A limit or restriction
Technology is a system because it is made up of
many parts, and these parts have a relationship
to each other and to the whole.
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• Technology system

GOALS
Control
FEEDBACK
PROCESSES
OUTPUTS
INPUTS
GOALS
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VALVES
PISTON
CONNECTING ROD
CRANKSHAFT
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• Defining the problem
• Researching and generating ideas
• Identifying criteria and specifying
  constraints
• Brainstorming
• Exploring possibilities
• Selecting an approach
• Developing a design proposal
• Making a model or prototype
• Testing and evaluating the design, using
  specifications
• Refining the design
• Creating or making it
• Communicating processes and results

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1. Safety is the product safe to use?
2. Reliability will it work consistently over
   time?
3. Cost is it affordable?
4. Quality Control does it meet customer
   requirements?
5. Environmental Concerns does it harm the natural
   or human environment negatively?
6. Manufacturability can it be made?
7. Maintenance how easily can it be maintained or
   upheld?
8. Ergonomics how efficiently can the human body
   utilize it?

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1. Mechanical Robot Arm
2. Structural Chassis / External Frame
3. Electrical High Voltage Powering Systems
4. Electronic Computer Systems
5. Fluid Wing Air Foil
6. Optical Lights
7. Thermal Temperature Contol Units
8. Biotechnology Food Preparation
9. Materials Metal, Synthetic Fibers, Plastics

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Start with
Goes to
Drives
Start with
Goes to
Drives
Gas tank
FLOW DIAGRAM
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HOMEWORK

• Write down any questions you have about the test
  we just reviewed, or any other topics that may be
  covered on the mid-semester exam.

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SOLUTIONS
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3.
4.
5.
6.
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SIMPLE MACHINES
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SIMPLE MACHINES
3.
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SIMPLE MACHINES
4.
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SIMPLE MACHINES
5.
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SIMPLE MACHINES
6.