Wright State University Lake Campus/2016-9/Phy1110/log
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In the middle of How things work college course/Motion simple arithmetic quiz
Vector, vector addition, components, unit vectors
Transformations between (magnitude,direction) and (x,y components)
- Private wiki at https://wikiversity.miraheze.org/wiki/Main_Page
- Importance of permalinks
- Set up student home pages for important links and image insertion
12-Sep 2d smith train and Malus law lab
- Two-d Smith train
- Review studyguide
- Lab choices:
Malus law and vector components.
Next time Run the lab 15 times and use the average. Run in a channel to control the balls movement. Have a slower acceleration. Present: '''Rimstock''', EmilyR, KTangeman26, NG18, Brackattack25, Crind
19-Sep velocity and acceleration
- Monday Lecture: Worked on Velocity and acceleration, focusing on questions pertaining to finding the acceleration. We did all but the first question ("When a table cloth is quickly pulled out from under dishes, they hardly move. This is because ..."),
26-Sep force table lab
Lab on force table: Reports on S-subpage to log. Rimstock
3-Oct Miraheze: Improve solution to static friction
- Most students have public wikis and know their passwords.
- Take attendance on Guy vandegrift
- Scanners in 196, 183,185, and library
- You have Skydrive through outlook. (Outlook related to email).
- https://wikiversity.miraheze.org/wiki/File:Physicsstaticfrictionproblem.jpg BrackAttack25CRind (discuss • contribs) 15:38, 5 October 2016 (UTC)
10-Oct Newton's III law
- Take attendance on Guy vandegrift for lab 12 October 2016 (UTC)
- Guided derivation of Newton's third law. In the figure to the right, let is pretend we don't know how the string interacts with the two masses, but assume that a force
T1  acts on m1 and the force T2 acts on m2. Take both T1 and T2 to be positive quantities, but use your intuition to guide you as to whether the force is to the right (positive) or to the left (negative). Assume both masses are initially at rest and that the net force is to the left. Write down Newton's third law (Fe=ma) for 3 (three!) masses: m1, m2, and Σm =m1 + m2
- The figure calls these forces F12 or F21, but I find this notation somewhat confusing. You need such notation if more than two objects are interacting.
24-Oct Centripetal force lab
Your report shall be handwritten on paper. We will cut and paste your efforts and try to produce a pdf file or a svg file to post on Wikiversity.
- Sketch device in stationary mode, labeling rotating mass, m, hanging mass, M, radius of orbit, r. Write an equation involving the spring's force, FS, the gravitational acceleration, g, any other variable that has been defined.
- Set up the device and quickly measure m, M, r.
- Derive a formula for FS involving your measured values. This formula is essential and needs to be prominently displayed in the report. Also calculate this force in Newtons. Perhaps include an uncertainty in this value.
- This is a "verification experiment", otherwise known simply as an experiment. We need two measurements of FS that might or might not be equal to each other. Is there any other way to measure FS ? Define v as the speed, and T as the orbit's period and write down two equations: One involves FS and a=v2/r and the other involves v, r, and T. Your prof will write them on the board and discuss.
- It's always a good idea to quickly measure and calculate first before doing it carefully
14-Nov Kepler's III, error averaging of times, 3 mass pendulum
- Proved kepler's III law and applied concept to g as function of r, T, m, M in whirly jig lab.
- Verified that it seems to be better (?) to measure 10 cycles and divide by 10 to get period. Promise to continue w error propagation.
- Watched part of the mit video and made our own 3 mass system and created video with Rimstock, KTangeman26, ng18, CRind, Emily_R, Brack_Attack25, and Guy vandegrift
28-Nov Fluid dynamics lab
- Must add this explanation of Bernoulli "force" to wikiworld
- Wikipedia:Kelvin–Helmholtz instability -- Need to add this and this to wikiworld
- Tornado in a bottle youtube
- Fire tornado youtube]