Day 29: Spring Lab Debrief

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College-Prep Physics: Yesterday, students designed their own experiments to determine the relationship between the stretch of a spring and the force applied to the spring. Today we shared out our results.

This year, I chose to use 2 different springs: one with a pre-load (red) and one without (green). My goal is to drive home that not all trends will go through the origin. Some groups still tried to fit a trend through the origin, though. Looking back, if I had been monitoring groups better, I would have asked those groups to go back and take more data for small stretches….hopefully continuing the linear trend down to the y-intercept.

##BFPM

NGSS Science and Engineering Practice #4: Analyzing and Interpreting Data
NGSS Science and Engineering Practice #5. Using Mathematics

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About Frank Noschese

HS Physics Teacher constantly questioning my teaching.

2 responses to “Day 29: Spring Lab Debrief”

  1. bcphysics says :

    How do you get a spring with a preload on it? Would this be using a force gauge that is pre-loaded? Are the students explicitly aware that there is a pre-load?

    Thanks!

    • Frank Noschese says :

      Springs that are very tightly coiled have preload. We used regular spring scales to measure force. No, the students didn’t know about pre-load. I wanted them to determine on their own if their trends needed y-intercepts.

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