Date: Tue, 21 Sep 2004 11:54:39 -0600

Author: "David Kardelis"

Subject: RE: force plate or rotary motion sensor

Post:

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I have a bunch of the rotary motion sensors. What kinds of labs do you
have the students do? I have not come up with anything I am very happy
with.

BTW the IBM/Thinkstation rotary motion setups,in my opinion, are nicer
than the Pasco/Vernier one. They can be used on Vernier's ULI and
LabPro's with the use of an adaptor. The last time I looked 2+ years
ago, the Thinkstation probe had twice the resolution of the
Pasco/Vernier probe for just a little more in cost. =20

=20

dave

=20

David Kardelis Ph.D. =20

Chairman; Dept of Chemistry and Physics

College of Eastern Utah

451 E 400 N

Price, UT 84501

=20

david.kardelis@ceu.edu

435-613-5258

435-613-5125 (lab phone)

435-613-5996 Fax

-----Original Message-----
From: owner-tap-l@listproc.appstate.edu
[mailto:owner-tap-l@listproc.appstate.edu] On Behalf Of Duane Warn
Sent: Tuesday, September 21, 2004 10:40 AM
To: tap-l@listproc.appstate.edu
Subject: Re: force plate or rotary motion sensor

=20

Good Morning Zeke,

=20

We just receive our rotary motion sensors yesterday. I played with one
for a while, but I couldn't get the software to recognize it. The
output was garbage. Do you have any suggestions before I call Vernier?

=20

Thanks,

=20

Duane

Boise State U.



>>> zeke_kossover@yahoo.com 9/21/2004 10:11:39 AM >>>


--- Aaron Titus wrote:

> ok, I have enough funds to buy either the Vernier
> force plate or the=20
> rotary motion sensor. I have reasons for wanting
> both of them, but can=20
> only afford one of them.
>=20


Get the rotary motion sensor. The data from it is
phenomenal. I can usually find rotational inertia
values within a few percent of the accepted values. It
is an excellent physical pendulum as well. Be sure to
buy (probably from Pasco) the attachments.

The force plate on the other hand is incredibly
flakey. I have now used two at two different schools.
In both cases, it has been hard to use. For example,
if you set it up like a bathroom scale, zero it, step
on it, get a reading then step off it, zero it, and
step back on, you will not get the same reading within
5 N. This drives students crazy.=20

Just my two cents.=20

Marc "Zeke" Kossover
The Jewish Community High School of the Bay


=20
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