Centripetal Force
Victor Liou
Partner: Brian Kelly
March 05, 2008
Centripetal Force
Abstract:
In this experiment, I found the relationship between mass, velocity, radius of curvature, and force
of an object moving in a circular path.
The apparatus used allow us to relate centripetal force,
acceleration and angular velocity while maintaining a constant mass and radius.
By testing five different
centripetal forces, I was able to find five different periods of rotation and five angular velocities.
The
equations that I utilized to relate and show validity in my data were:
=
,
=
,
F
ma
Fc
mv2r
and
=
Fc
mrω2
.
I found that
= .
mr
0 082N
which fit in my range of the slopes of my two worst error bars
0.0738<0.082N<0.0921.
Theory:
Force is required to change an object’s velocity through changes in acceleration.
In this
experiment, we will investigate the force that is necessary to keep an object moving in uniform circular
motion, or a path that is a perfect circle at a constant speed.
We know that speed is magnitude of
velocity.
We also know that there is a force exerted on an object in uniform circular motion since its
velocity vector is changing direction as time goes on.
The acceleration of an object in uniform circular
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 Spring '08
 MCNAMARA
 Circular Motion, Rotation, Velocity, Uniform Circular Motion

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