Experiment #1
Hook’s law
OBJECTIVE: To Verification of Hooks Law by measuring the elongation springcaused by load
on the spring
Introduction:
Hook's Law is a fundamental concept in physics that explains the behavior of elastic materials
when subjected to a force. According to Hook's Law, the extension or compression of an elastic
material is directly proportional to the force applied to it. This law can be expressed mathematically
as F=kx, where F is the force applied, x is the extension or compression of the material, and k is a
constant known as the spring constant.
In this experiment, we will verify Hook's Law by measuring the extension of a spring when a force
is applied to it and plotting a graph of the relationship between force and extension.
Figure 1.1: verification of hook's law
Equipment needed:
Procedure:
Data Table:
Sr : No
1
2
Mass
(kg)
Weight
(N)
Initial
length
(cm)
Final
length
(cm)
Change in
length
(cm)
Spring
constant
k=f/x
3
Table 1.1
Graph:
The graph should have force applied (N) on the y-axis and extension (m) on the x-axis. There
should be three data points on the graph, one for each mass.
Figure: 1.2 Graph between force and mass
Calculations:
Precautions:
Conclusion:
.
Tasks
1. What is the relationship between the applied force and the extension of the spring based
on your experimental results?
2. How does your experiment verify or support Hooke's Law?
3. Calculate the spring constant (k) based on the slope of the graph. Is it consistent with the
known or labeled value of the spring constant?
4. Discuss any possible sources of error in your experiment and how they may have affected
the results.
5. How could you improve the accuracy and reliability of your experiment?