PASCO PS-2138 Goniometer - Manual (Page 17)

Model No. PS-2138 Experiment
17 ®
Analysis
In this analysis, use units of m/s /s or m/s
2
for acceleration, rad/s for
angular velocity, and rad /s/s or rad/s
2
for angular acceleration.
Tangential Acceleration
1) Look at graphs of Angular Acceleration vs. Time and Tangential
Acceleration vs. Time together. * How are the graphs related?
2) Create a graph of Tangential Acceleration vs. Angular Acceleration
and apply a linear fit. * What is the slope of the best-fit line (including
units)?
3) Write the equation of the best fit line in terms of a
T
,
α and slope. Does
the relationship represented by the best-fit line support the prediction
that you made earlier?
4) What physical quantity is represented by the slope? Measure this
quantity directly and compare it to the value of slope.
*Tangential
Acceleration is
measured by the
sensor as
“Acceleration, Y.”
*Plot Tangential
Acceleration on the
vertical axis and
Angular Acceleration
on the horizontal
axis.