January 7, 2008 QUIZ – 5 minutes EX. REV. 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? 1. F x d = W 22 lbs x 10 ft = W = 220 ft-lbs. 2. F x d = W 200 lbs x d = 20,000 ft-lbs. 200 lbs. d = 100 ft. 3.Fuel Efficiency Output = 300 miles Input = 15 gallons Efficiency = ? Wo / Wi = Eff 300 mls / 15 gal = Eff = 20 mpg

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 MID-SEMESTER EXAM EX. REV.

LOOSEN YELLOW KNOB ADJUST BLACK KNOB TIGHTEN YELLOW KNOB

TOP RIGHTFRONT TOPRIGHT FRONT

MATERIALS TECHNOLOGY IRON AGE SOCIETY RENAISSANCE INFO. AGE BRONZE AGE BRONZE STEEL INDUST. AGE

HISTORY ARTIFACT INNOVATE IMPROVISE INVENT TIMELINE

A D B C C

Great Britain 1.Access to the sea and world markets. 2.Abundance of farmers willing to move to cities and work in factories. 3.Developed practical use of science. 1.Loss of craft tradition. 2.Child labor. 3.Unhealthy working conditions.

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.

D H G A I E F B

LINEARROTATIONAL 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? 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

1. Information4. Energy7. Tools and Machines 2. Materials5. Capital (Money) 3. Time6. 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

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.

Technology system: INPUTS PROCESSESOUTPUTS GOALS FEEDBACK & Control

VALVES PISTON CONNECTING ROD CRANKSHAFT

1. Defining the problem 2. Researching and generating ideas 3. Identifying criteria and specifying constraints 4. Brainstorming 5. Exploring possibilities 6. Selecting an approach 7. Developing a design proposal 8. Making a model or prototype 9. Testing and evaluating the design, using specifications 10. Refining the design 11. Creating or making it 12. Communicating processes and results

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?

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

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

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. EX. REV.

input EX. REV.

2. input EX. REV.

input 3. EX. REV.

4. input EX. REV.

5. input EX. REV.

input 6. input EX. REV.