Write the slope of your F/x calculations for each spring under the matching color on the whiteboard on the right.
Spring constants
As we saw yesterday, the relationship between the force applied to a spring and the stretch of the spring is linear. The slope of the F/ Δ x plot is
F = k* Δ x
which can be rearranged for the spring constant:
k=F/ Δ x
and the units of the spring constant must be N/m.
Review: Video showing the calculation of a spring constant
Similar to the lab we did in class, only this one uses the force of gravity between the earth and a hanging mass.
Calculating the energy in a spring
We demonstrated this both with algebra/geometry and with integrals in calculus. Vide of this will appear below soon.
Calculation video will appear here soon.
Flipping physics video.
Class/homework
In your textbook, Page 152, Problems 21-25. Complete tonight so we can whiteboard them tomorrow.
Problem 22: Here is a video of helper springs at work: https://youtu.be/GQs79EIw81M (this video is set to not allow embedding in other web sites. Below is another video that did allow embedding.