Vernier Software and Technology
Vernier Software & Technology

Finding a Spring Constant


If a spring is not compressed or stretched too much, it should obey Hooke's Law. According to this Law, if an additional force, Fy, acts on the spring then the change in the spring length, y, will be directly proportional to that force. The spring constant, k, for a Hooke's Law spring is defined as the constant of proportionality that relates the two variables, so that Fy = ky. We have created a digital movie that shows a spring clamped to a rod so its top end cannot move. The movie actually consists of a series of still "photos" showing the spring stretching as more and more mass is added to its bottom end.


In this activity, you will

  • Verify Hooke's Law for a spring and determine its spring constant, k.

Software for Experiment

This experiment uses Logger Pro software for video analysis. The video for analysis is included with the lab book.

Experiment 16 from Physics with Video Analysis Lab Book

<em>Physics with Video Analysis</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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