NAME:_____________________________ Machine Construction Project Activity Component Machine Design Mechanical Advantage Report Description Machine Use & Safety Considerations Drawing (AutoCAD, hand sketch) Measurements Materials Build Procedure (document) Pictures/Videos of build Load Force Calculation Effort Force Determination AMA Calculation Effort and load distance determination IMA Calculation Purpose Materials & Design Analysis (answer analysis questions) Conclusion (answer conclusion questions) Date Complete Purpose: To design and construct a simple or compound machine for the purpose of solving a practical problem and to determine its mechanical advantage. Your machine should have some useful purpose. Common machines to consider include: pulley, mobile, can crusher, trebuchet or some other catapult. Materials: State the materials that you will use including labelled diagram(s). Procedure: 1. Submit the machine design to your teacher for safety evaluation. Your invented machine should not pose any risk to human life and should serve some useful purpose. 2. Once you receive notification from your teacher that your design has been approved for safety, construct the machine according to the design. As you progress through the stages of building, take a series of photos or videos that can describe your process. The pictures or video, with descriptive captions, must be submitted to the teacher. 3. Complete a written report of the construction which will include: Purpose, Materials (including labelled diagrams), Analysis, and Conclusions. Analysis: 1. Record collected data and calculations (with units) that indicate the mechanical advantage of your machine. 2. What safety considerations did you make in designing your machine? Conclusions: This should be a short paragraph that includes the answers to the following questions. 1. What machine was constructed? 2. What practical problem does the machine solve? 3. Is the construction a simple or a compound machine? 4. What is the mechanical advantage (actual or theoretical)? 5. Identify any design features that could improve the mechanical advantage of future constructions of this type. Rubric Machine Construction Categories Level 1 Level 2 Level 3 Level 4 (50 - 59%) (60 - 69%) (70 - 79%) (80 - 100%) Thinking -ability to design a machine, selecting appropriate instruments, safely applying appropriate techniques, and collecting accurate data to assess the machine's mechanical advantage SI1.02, SI1.04, SI1.05, SI1.08, MS2.07 -demonstrates limited ability to design a machine, selecting appropriate instruments, safely applying appropriate techniques, and collecting accurate data to assess the machine's mechanical advantage -demonstrates some ability to design a machine, selecting appropriate instruments, safely applying appropriate techniques, and collecting accurate data to assess the machine's mechanical advantage -demonstrates considerable ability to design a machine, selecting appropriate instruments, safely applying appropriate techniques, and collecting accurate data to assess the machine's mechanical advantage -demonstrates thorough ability to design a machine, selecting appropriate instruments, safely applying appropriate techniques, and collecting accurate data to assess the machine's mechanical advantage Communication -expression and organization of relevant ideas and information related to the construction of a machine and the assessment of its mechanical advantage SI1.06, SI1.07, SI1.11 -expresses and organizes relevant ideas and information related to the construction of a machine and the assessment of its mechanical advantage with limited clarity -expresses and organizes relevant ideas and information related to the construction of a machine and the assessment of its mechanical advantage with some clarity -expresses and organizes relevant ideas and information related to the construction of a machine and the assessment of its mechanical advantage with considerable clarity -expresses and organizes relevant ideas and information related to the construction of a machine and the assessment of its mechanical advantage with a high degree of clarity Application -application of concepts related to the function and mechanical advantage of simple machines to the invention of a unique machine with a useful purpose MS2.07 -demonstrates limited ability to apply concepts related to the function and mechanical advantage of simple machines to the invention of a unique machine with a useful purpose -demonstrates some ability to apply concepts related to the function and mechanical advantage of simple machines to the invention of a unique machine with a useful purpose -demonstrates considerable ability to apply concepts related to the function and mechanical advantage of simple machines to the invention of a unique machine with a useful purpose -demonstrates thorough ability to apply concepts related to the function and mechanical advantage of simple machines to the invention of a unique machine with a useful purpose