This lab requires VERY precise measurement. The most important aspect of this lab is to determine HOW your group will go about making the most precise measurements for "x" during this lab.

Purpose: The purpose of this investigation is to explore Hooke's Law by comparing how the same spring reacts to different masses.

Oddly enough in this lab I'm asking/telling/requiring/demanding that you copy this "Purpose" and paste it into the "Purpose" section of your write up. If you deviate and write your own purpose, it will cost you.

You will then use Hooke's Law

F = -kx

to determine an experimental value for the spring constant of your spring.

You'll have ring stands (remember those from chem?) to hang your masses from, a set of small masses, a set of small springs, rulers and a lab quest. You are not required to use any of those materials (except for the masses and the springs).

All materials are at the front of the class. If you have other ideas, please float them by me tomorrow.

Remember, the goal here are VERY precise measurements. Your conversations must ANTICIPATE specific errors and instances that will cause your measurements to deviate and account for them before you begin the lab. The methods section will count double on this lab. Try to think outside the box in a way that will assure the most accurate measurements. There is a possible bonus point here for creativity and thinking outside the box.

If your procedure is just 'good enough' then your grade will be "good enough".


******** WARNING *******

Please be VERY careful with my spring sets. I just bought them and I'm hoping to use them for years to come. If you stretch them too far, they will deform, just like my slinkys. DO NOT use the 1.00 kg mass or the 500 gram mass. Ever, at all.


Also, the Lab Quests tend to work VERY well if you place them on the floor and let the mass bob up and down over them *yay*. Once again be VERY careful. If you aren't the mass will come crashing down on the labquest, and that's just not good. Please, Please, Please be mindful of the equipment lets your MOST gracious (and humble) physics instructors goes berserck with a brain hemorhage.


Finally -- This lab is a little bit different in that I'm going to have you graph your data and that I'll grade that graph based on Title, Axis Labels, Units and data plot using a line of best fit AND SLOPE CALCULATION. Additionally, I'm going to have your write a brief (clear and concise if you please) analysis of the graph right there on the graph.

Instructions for using excel or google sheets to make a VERY impressive graph are here (This is a fantastic skill to learn. Trust me, you'll be glad you did). If you want to do it by hand, feel free, but it will cost you half a point.

Once you have completed your preliminary conversations, you can begin your write up and/or practice graphing (use your assigned chromie please!). Keep in mind that some things may very well change when you actually begin your lab. As always, make sure to make the proper notations in your writeup.