Kevin Boles
Jacob
Section 5
September 22, 2009
Equilibrium of Concurrent Forces
Abstract:
In the study of physics, the idea of force comes up most of the time.
Understanding that
concept is one of the most important things for a student studying physics should
understand.
One way of learning of concurrent forces would be by the use of a force
table; this is a stand with various amount of weight hangers connected to it. This is used
to examine the conditions for a particle to reach equilibrium under the influences of
different coplanar forces. We use this information to study the analytical and graphical
methods to examine this particle’s equilibrium further.
Under the influence of three forces upon the particle, the net ycomponent was found to
be 0.006 and the net xcomponent was found as 0.03 for the particle to reach its
equilibrium.
Under the influences of four different forces the particle reached
equilibrium at the net xcomponent 0.0968 and the net ycomponent 0.0079.
Theory:
This experiment was a good experiment to use to analyze the physical qualities and to
distinguish them even more from scalar quantities.
It shows that we need to provide as
much information as possible and sometimes we need to give even a little more than that.
It also was a good way to describe vector addition and resolution, which are figured out
by either the triangle Method of the Parallelogram Method.
For the Triangle Method, we
use this formula:
R is the vector sum of A and B, its tail coincides with the tails of A and its head coincides
with the head of B. If this is drawn out and all connected, a triangle is formed and if you
were to solve this problem analytically you would need to use the laws of sines and
cosines. For the Parallelogram Method we move vectors A and B so that both tails are at
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 Fall '10
 Hakel
 Physics, Current, Force, Euclidean vector, 0 degree, 50.06g, 65.2g

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