Introductory physics lab
Lab report #4
Section 214
Objective:
Hook’s is a fundamental topic of physics and few divisions of engineering like Civil and Mechanical engineering. This law helps to perceive elastic property of a material. As per this principle of physics, force needed to compress or extend a spring by some amount of distance is proportional to the distance. If F is force and x is distance, then as per Hook's law, F = -k.X, where k is termed as stiffness and it is constant for a material rather the spring. Purpose of this experiment was to find spring constant (k).
Equipment:
Following equipments was utilized to carry out this experiment.
- A long rod with an attached hanger and a sturdy base.
- A spring scale
- Slotted masses
- A 50cm ruler
- A mass hanger
- A spring
Rules:
F = k.Δx , where F is the applied force, k is constant for the spring, Δx is the displacement of the spring after application of force F. From the above equation, it can be said that it is an equation of a straight line and k is the slope.
So, Slope = (y2-y1)/(x2-x1)
Observations:
The average of K = 18.8 + 12.4 + 10.4 + 9.5 / 4 = 12.775
Graph:-
Slop = (Y2 - Y1) / (X2 - X1) = K = -13.06 N/m
2.5
2
1.5
1
10 15 20 25
Conclusion:-
The experiment was carried out safely and successfully. The result, obtained from the lab experiment, was reasonable and not much affected by errors. By carrying out this experiment, knowledge about finding spring constant (K) was perceived. The relation between the applied force, displacement of spring and stiffness was also understood. So, objective of the experiment was met and here lies the success of the lab experiment.
