Richard Wright

[Richard Wright @TeachWright]

@physicsramble @cossettej A few cases to keep mass the same but change the compression normal force. String is at an angle, finger pushes down a little on one, string or fan lifts up a little on one. External force not dependent on mass.

[Richard Wright @TeachWright]

@a_freeparticle This is awesome and very useful. Thanks! I’m adding https://t.co/exGsJa1sfZ Random Name Picker to thread for brainstorming and in case anyone hasn’t used it before. Super simple to use. Some add’l flippity features I use regularly are jigsaw groups, speed networking, spinner.

[Richard Wright @TeachWright]

@rjallain Gifski has worked well for me. Super simple and that’s all it does.

[Richard Wright @TeachWright]

@Hookean1 Just in case, here’s another one: https://t.co/vxzuBoWE1k

[Richard Wright @TeachWright]

Oops...here's the latest version with "window" for reading the position.

[Richard Wright @TeachWright]

#iteachphysics UbFPM Practicum: Galileo Incline. 3D printed bell holders for Pasco tracks. I'm uploading the file to Printables, but if you have any ideas for a useful custom attachment for Pasco tracks, I have a student very eager to use/expand on this design. Let me know.

[Richard Wright @TeachWright]

@kilroi22 @BarnettDreyfuss I wonder what the zero reading looks like before and after the drop.

[Richard Wright @TeachWright]

@maalmeida85 @lernerphysics @MrJoeMilliano @lernerphysics is on it. Command-Option-i interpolates some points for the line you draw. Change the line to best fit and then select the data points and you can Command-Shift-j until you're all jittered out.

[Richard Wright @TeachWright]

Nobody:
Physics Teacher: It's a ring. Of course it has to be on fire.

[Richard Wright @TeachWright]

@MrJoeMilliano Love the Before and After discussion! Didn’t see it mentioned so I also wanted to make sure everyone knows the “Strike Through Data Cells” under Edit. PC users even get a keyboard shortcut (alt minus).

[Richard Wright @TeachWright]

#iteachphysics Bad Question of the Day. Name that misconception. [Actual College Exam Question...not the same prof as last time :)]

[Richard Wright @TeachWright]

@KimFreudenberg @maalmeida85 In terms of understanding this based on system, I recommend the approach of point-particle vs real (extended) system. Thanks M&I and Chabay and Sherwood.

[Richard Wright @TeachWright]

@KimFreudenberg @maalmeida85 The negative comes in because potential is defined by the internal interaction not external. So you’ll have them with the +W of YOU pulling, but the spring force is in the opposite direction of your force. So Us is negative integral of spring force not YOU force.

[Richard Wright @TeachWright]

@physicscarp Got it! VPython seems like the best solution. I’m thinking I might have seen something like this from Bruce Sherwood’s M&I stuff.

[Richard Wright @TeachWright]

@physicscarp Some good ones in Geogebra. https://t.co/IpqcczAFH1

[Richard Wright @TeachWright]

@fnoschese What about using terms for the ball-spring model? Compression of bond(spring), Stretching of bond(spring), Bending of bond(spring). Shearing always seems obvious to me on Matter Model demo but not so for Ss.

[Richard Wright @TeachWright]

@fnoschese @Desmos Teachers get a good overview

[Richard Wright @TeachWright]

@fnoschese @Desmos Oops! Fixed the VAD to actually match the provided FBD #2...
Student: https://t.co/C5HRaD0MEF
Copy and Edit: https://t.co/czj2hdvalg