Objective:
To determine the spring constant of a given spring and to determine an unknown mass using Hooke’s Law
Equipment:
spring, stand, mass set, unknown mass, ruler
Theory:
Procedure: I attached the spring to a rod and then measured the distance from the table to the bottom of the spring. I then selected different masses and set them on a hook and added the hook to the bottom of the spring. I then measured the distance from the table to the bottom of the now elongated spring. The data was recorded. Finally, I measure the elongation of the spring for an unknown mass.
Graph:
m
H
= Hanging Mass (m
a
+m
hook
)
m
a
= mass added to hook
F=m
H
g=K
x
F
s
x
by Newton’s 3
rd
Law
x-axis
y-axis
m
h
g=K
x
F=m
H
g
0.020 0.040 0.060 0.080 0.100 0.120 0.140 0.160 0.180 0.200 0.220
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.25
0.34
0.44
0.54
0.64
0.74
0.83
f(x) = 3.42 x + 0.15
Lab 7: Hooke's Law x (m)
mHg (N)
