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Constant acceleration Physics lab report
Motion with Constant Acceleration
Introduction/Theory
Acceleration is defined as the rate which a moving body changes its velocity with time. It
has both magnitude and direction thus it is a vector quantity. Acceleration deals with change in
velocity and thus if there is no velocity variation then there is no acceleration. Constant
acceleration means that the speed is changing with constant amount. Taking the position of
glider as a function of time, it is possible to determine the distance travelled by glider during
different time. The velocity and acceleration of the glider at different time periods can be
determined graphically. Motion with constant acceleration is commonly studied in mechanics. At
time (t=0) and initial speed vi , the final speed vf , the acceleration a, distance travelled Dx and
the time of travel is t are related by the following equations.
Vf =at + vi
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Dx + vit +1/2( at2)
V2f = v2i + 2aDx
A sliding glider is a good example of constant acceleration motion.
Objectives
To learn the constant acceleration motion
To calculate the acceleration due to gravity of the glider
To identify the possible sources of errors in calculation of g
Equipment and apparatus
Air track and glider- this was used in order to achieve a frictionless surface. In order to
achieve this, air was pushed under the glider using blower through small holes on the air track.
The stream of air lifts the glider and provides an air cushion in order to minimize the friction
with the track.
Aluminum block- it was placed under one of the support legs of the air track in order to
tilt it.
Ruler and caliper- for measurement purposes
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One photogate and one timing system- the system was used to measure the final speed of
the glider. A two-post assembly was mounted on the top of the glider.
A timing system of 2 MHz clock
Procedure
Using a meter rule, the distance between the support legs of the air track was measured.
L= 1.64 m
The height, h of the aluminum block was measured using a vernier caliper. It was
measured to a precision of 0.001cm.
h= 2.54cm
The tilt angle was calculated using the measured height and length.
Til...