The Detroit Metropolitan Area Physics Teachers (DMAPT) has been meeting for more than 50 years. We try to meet several times every school year. Our meetings typically consist of teachers sharing labs, demonstrations, and other lessons they use with their classes. If you haven't been to any of our meetings in the past I recommend you check out our Newsletters and Meeting Notes to see what we're all about. If you haven't been getting our emails and would like to, please enter your name and email in our form.
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November 1, 2011
Room 158 of the Mark Jefferson Science Complex, Eastern Michigan UniversityThank
you to Dr. Beth Kubitskey, Dr. Norbert Vance and the rest of the EMU
faculty and students for hosting a great meeting and for the exciting
tours!IntroductionsDemonstrationsTimer
ball - press the button/drop it and it stops time when it impacts the
ground. Centripetal force swinging mass with force measuring device.
Both available from Arbor Scientific, if not yet, then maybe soon?Flip
car - the car hits a wall flips over and comes back. Good for the
investigating the difference between distance and displacement.Arrange
three push-pull spring scales attached to each other in a row. Instruct
student volunteers to pull with different forces at either end
(impossible!). Ask them to pull with the same force, and then have
another read the force on the scale in the middle. Good tension/3rd Law
demo. http://www.arborsci.com/Products_Pages/Measurement/SpringScales.aspxColliding
cars with identical springs attached to colliding surfaces of the cars
changing the mass of the carts, showing spring deflection is the same
(3rd Law).A
ball is dropped from a building. How can we figure out how far it has
gone without using a kinematics displacement equation? Solution: graph
the simple velocity vs. time (10 m/s/s) line graph and easily calculate
area underneath. Great for students with math gaps.Have
students tie washers or other masses along a string so when the string
is stretched vertically and dropped the masses impact the ground at a
constant rate, evidenced by the sound of impact (space according to 5,
20, 45, 80).Have
students tie 5, 20, 45, 80 cm strings with masses at the end evenly
spaced along a meter stick. They can then visualize trajectories with
ease by manipulating the angle of the meter stick!Vernier
video analysis using Logger Pro software and/or Tracker (freeware built
on the OSP java platform for teachers) are good tools for students to
create and interpret graphs and analyze motion using video of real-life
action. Video analysis also works quite well in concert with other
Vernier data collection devices, like force sensors. Students can
capture video with cell phones, digital cameras, or they can analyze
footage you provide. An alternative to desktop computer use is the
Vernier Video Physics
app for iPhone and iPad. With the app you can take a video on your
device and do a full video motion analysis with graphs. You then have
the option to email the analysis and work with it on a computer.http://www.cabrillo.edu/~dbrown/tracker/http://www.vernier.com/products/software/video-physics/
BusinessOur next meeting is December 6th at Macomb ISD. Email updates coming.A
member, via email, expressed concern about the selection of Tuesdays
for the meetings. It was mentioned with no real solution to the concern
so far. Informal discussion revealed that the meeting days are varied
year-by-year.Planetarium TourThe
new EMU planetarium is in a suspended sphere four floors over the new
atrium in the new Mark Jefferson Science Complex. It is a beautiful
facility.http://www.emich.edu/physics/emu_planetarium/http://www.emich.edu/univcomm/releases/press_release.php?id=1292522377Observatory TourWe
got to see Jupiter through the apochromatic refractor telescope on top
of historic Sherzer Hall on a nice clear night, as well as the moon
through a Schmidt–Cassegrain on the roof.http://www.emich.edu/physics/sherzer/equipment.phphttp://www.emich.edu/focus_emu/081109/augustpeoplecolumn.html |
Posted Nov 3, 2011 8:31 AM by Scott Brunner
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