Toilet Paper Roll Mass & Length Investigation
LAB MANUAL IS HERE
LAB GRADING RUBRIC IS HERE
INVESTIGATIVE QUESTION: Can we develop a mathematical model to determine the mass of a toilet paper roll by measuring the length of the paper pulled away from that roll.

NOTE: Your model should work regardless of whether the relationship between the roll mass and paper length is linear or non-linear.

A well crafted model will accurately predict the mass of the paper roll based ONLY on the length of paper pulled away from the roll.

1) Work with your group to determine basic methodology for this lab. You have an electronic scale and toilet paper. Other items may also be available on request. Remember, your model MUST be the result of taking data and graphing that data.

2) We are NOT looking for a brute force approach here.... you should develop an elegant model that does not require counting every single sheet or stringing out the ENTIRE roll.

3) Once you have a well thought-out plan, take some time to suggest particular problem areas, and plan for them.

4) Most of us have (correctly-- I think!) deduced we are going to end up with a linear relationship between the mass of the roll and the amount of paper stretched out from it... HOWEVER, I want you to come up with a single procedure that will deal with a non-linear relationship just as easily as it deals with a linear relationship.

Error is a significant part of our lab write ups. We will NOT be using high school error analysis. You must use specific and realistic estimated error values and show mathematically how they propagate through your calculations.

You'll need to review our LAB SPECS at length.

All labs are due one week from the last day of the investigation.

You SHOULD collaborate with your group members in all aspects of the lab -- including the written report. You should NOT, however, copy and paste anything from anyone else at any time for any reason. You should NOT take work from another person or other source and put your name on it... Ever.... For Any Reason.