Objectives

• Students will understand mechanisms and mechanical advantage.
• Students will learn how to access their myPLTW account

Classroom Activities

1. Prayer
2. Instructions for 1.1.3 Mechanical System Efficiency Exercises (to be turned in by end of class)
   • Review Materials:
     • Refer to  myPLTW 1.1.3 Introduction to Work, Energy, and Power for guidance.
     • Consult the slides titles Work, Energy and Power under Unit 1.
3. Complete Activity 1.1.3. 
• Assemble the VEX frame as outlined for Activity 1.1.3.
  • You will be using the weights provided
  • You will be using power supplies provided
• In your engineering notebooks make sure you record for both weights:
  • Mass to be lifted (convert to N).
  • Voltage
  • Current
  • Time
• Complete the Data Analysis (Steps 12-15) and record in your engineering notebook
• Answer the conclusion questions in your engineering notebook
4. Activity 1.1.4 Powerful Pulleys. Work through the activity and answer the following questions in your engineering notebook:
   1. Reflections Questions
   2. Applications of Pulleys Questions
   3. Conclusion Questions

Homework

• Complete 1.1.4