Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538
Demonstrations are cataloged according to PIRA Bibliography
PLEASE REQUEST DEMOS WELL IN ADVANCE
Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.
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You have selected the following Demos:
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Measurement of Free Fall AccelerationPurpose:To show the relationship between distance and time in vertical free fall.Procedure:NEW PASCO FREE FALL APPARATUS with COMPUTER INTERFACE:Instructions: Clamp meter stick to stand so different heights can be measured. Plug Free Fall apparatus 1/4" plug into port #4 on 750 interface. Place ball in release mechanism putting tension on [aluminum] and tightening set screw. Place stop pad directly below. With Pasco Capstone software open (see below), press "Record" button on lower left of screen. Then turn set screw CCW which will release ball and initiate timing. When ball lands on pad, timing will stop. Press "Record" each time you start a new measurement. An accurate computation of 'g' can be done by taking 3 timings at differing heights. At 1m height timer should read .452 sec. For software on classroom computers, go to: "Libraries" (on Desktop upper left) "Documents Library" "Pasco Capstone Files" click on "Measurement_of_Free_Fall_Acceleration.cap" When exiting software, do not save changes, ie. "Discard Changes" OLD PASCO FREE FALL TIMER SETUP: This setup is no longer functional (shown in bottom photo). It consisted of a PASCO Model 9202 Free Fall Timer and large Unilab Display. Hints:v=atx=(1/2)*at2 Equipment:
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