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University Physics 1021, Feldman
Introduction
In this lab, we used many different conceptual techniques to convert data taken into
meaningful information.
We were able to use our knowledge of vectors to decide how to figure out how the
frictional force related to the vector of gravity that was acting on the cart.
We were
also able to find that the normal force equaled the other vector of gravity.
Using
this knowledge, we summed our x forces (frictional force and gravity force) to find
out that µ(kinetic) value determined by the cart up the slope subtracted by the
µ(kinetic) value determined by the cart moving down the slope found the value of
µ(kinetic) that was in action on the track.
Other math skills were at use in this lab, such as the ability to relate equations and
sum forces, then cancelling and rearranging equations until the found the values we
were looking for.
We also took the derivative of velocity to find the acceleration
values that we would use to find the value of g.
Then, we rearranged and plugged
in values to solve for the µ(kinetic) value.
We also increased our abilities with logger pro, using the sensor, and using the cart
andtrack system.
We implemented prior knowledge of measuring accurately with
a ruler.
We also discussed and figured out possible sources of error that caused our
data to be imperfect.
Finally, we used our new knowledge of forces and our knowledge of freebody
diagrams to solve for µ(kinetic) values and divide our logger pro data into
appropriate sections. In general, this lab practiced most of the skills that we learned
during the second 3 weeks of class.
Background
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This note was uploaded on 11/17/2011 for the course PHYSICS 1031 taught by Professor Professorfeldman during the Spring '11 term at GWU.
 Spring '11
 ProfessorFeldman
 Physics, Force, Friction

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