Name ______________________________ Ms. Sabbatino Date ___________ Period _________ Lab #11: Power Challenge Goal: To determine which of your classmates generate the most power while climbing up the stairs. Background: ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Materials: - ruler - Stop watches - stairs Lab Setup: Draw AND LABEL the setup Procedure: 1. 2. 3. 4. 5. 6. **1KG=2.2LBS** person weight (lbs) 150 180 140 132 110 220 mass (Kg) Weight (N) Height (m) Work done (J) 4.5 4.5 4.5 4.5 4.5 4.5 Time (s) Power (W) Predicted Rank 3.5 3.9 2.8 3.1 3.3 4.0 Data: Fill out whatever you need to in the table below Analysis: Sample Calculations: pick one person and show a calculation for each of the columns including formula, substitution with units and answer with units. Weight in pounds to mass Mass to weight in newtons Actual Rank Work Power Conclusion: ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________