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Physics Lab Report - CENTRIPETAL FORCE
Course: General College Physics I (PHYS 1441)
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University: The University of Texas at Arlington
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Introduction:
Centripetal force is the required force to keep any object in accelerated motion
within a curved path. This force is directed towards the center of path’s curvature and
depends on the radius constant speed, and mass from the path’s center. Within this lab
the role in circular motion of radius,mass and centripetal force is tested in three different
conditions.The speed is then obtained from the average time it takes in completing a
complete circle.
Objective
Verify the relationship played by the variables within the equation Fc = m( V2/ r) as
we keep the value of two of these variables constant varying the third and measuring
the fourth variable.
Theory
An object with mass (m) moving along a circle of radius ( r ) with continuous
speed (v) is allowed to accelerate regardless of the constant vector of velocity, because
the direction of the vectors change continuously. Instantaneous acceleration is referred
to the acceleration of a moving body at any given time. In a circle the direction of the
instantaneous acceleration unit vector, points towards the center. Through Ac = v 2/r we
are then able to calculate the magnitude of the instantaneous acceleration. The
subscript c derives from referring the acceleration directed towards the center as
centripetal force.
Within Fc=m(V2/ r), we are able to see the that F=ma indicates the need of a net
force required to produce an acceleration.
In the experiment the spinning mass will be the object going under the circular
motion. Properly setting the apparatus, will allow for the spring connecting the spinning
mass and the rotating shaft, to provide the force.
By using, v = r/T it is easier to obtain the speed of the spinning mass. T, refers 22222222222222 2
to the time it takes to complete one revolution around.
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