58
Force of a Spring
Hang a spring vertically and measure the stretch of the spring as a function of
mass added to the spring. Do not exceed 250 g mass. Take 5 points.
Use Newton’s Laws to find an expression for the force of the spring in terms of
the mass,
m
, added.
Make a plot (by hand!) of the force of the spring versus the stretch on the
supplied paper.
Each person should make a graph
. One goal of this exercise is
to ensure that you can quickly make a graph by hand when needed.
First
decide what “force versus stretch” means. Which variable goes on the horizontal axis, and
which on the vertical axis?
Second
, decide on the ranges of the variables, i.e. the maximum minus minimum value for each
variable.
Third
, examine the graph paper supplied (a coarse graph paper) and choose a scale for each axis.
Fourth
, make tick marks on the axes and label them with values. Also label the axes with the
variable and the units. Give a meaningful title to your graph.
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 Fall '09
 LIND
 Derivative, Force, Velocity

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