12/08/06
Group 1
Russell Adams
Pawel bokata
Vahid Hamidullah
Mike Makhlouf
Physics 111A
Section:
TA: Ke Su (
[email protected]
)
1.  Objective
Review the graphical analysis methods used to determine the functional relationships
between two experimental variables.
2. – Theory
3. – Equipment
4. – Procedure
The following sets of data were measured for three different experiments.
1. Measure the force required to expand a spring.
2. Measure the period of a pendulum as a function of length of a pendulum.
3. Measure the horizontal deflection of a two meter stick loaded at the end as a function
of overhang.
Experiment I:
Measure the force required to displace a spring. Hang masses ranging from 0200 grams
in 40 gram increments. Don’t forget to count the weight of the mass hanger. Plot the deflection of
the spring (in cm) vs. the mass (in grams). This means that the yaxis is the deflection and the x
axis is the mass. The points should follow a straight line. Find the slope and intercept of the best
line fitting experimental points plotted. The line (the best one) is named “regression line.” Write
an equation for the experimental relationship between displacement and the mass using values of
the slope and intercept. This equation sho9uld have the form of a straight line.
Experiment II:
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 Spring '10
 Universal
 Physics, Orders of magnitude, deflection

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