Why do things float or sink?

posted Sep 24, 2017, 6:02 PM by Barbara Fortunato   [ updated Sep 25, 2017, 5:42 AM ]
2: M 9/25B lab, 4: W 9/27
Today, after your daily quiz on last night's videos, we'll review why things float... you may have learned before that if something is less dense, then it floats.  But what are the forces involved?  We'll explore Archimedes' Principle which you learned about last night.  
We'll then start another lab - Penny Boat - where you'll need to ENGINEER your penny boat to hold as many pennies as possible.  As part of this lab, you will self-evaluate yourself as a collaborative team member using the rubric below.  You will type up this lab with your lab group.  You must use a Google Doc (Google Drive) to collaborate on this write-up - you should do this through Google Classroom.   (One report per group.)  Please include in your write-up things that you measured, a diagram of your boat, a free body diagram of your boat, and calculations.  These all must be typed, and you must use Equation Editor, Drawing Tool, or equivalents.  No hand drawings or diagrams.  Make it look professional!  Calculate how many pennies your boat will be able to hold if you were to execute exactly according to your design.  Next class, we will test your penny boats and see how close you came to your estimates.  Lab write-up will be due Tuesday, October 3rd.

Presentation:  Archimedes' Principle
Handouts:  Collaborative Team Member Goals & Self EvaluationCollaborative Team Member Rubric
Homework:  Make some serious headway on your lab write-up.  You will be given time next class to collaborate with your group in order to figure out the best boat.  If you would like to bring your own device (laptop) to next class, you all can work on your write-up simultaneously.