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Simple Harmonic Motion is Observed through Webcam (1.1)

Students Manual Webcams are easily available and cheap every-day use items. This innovative experiment uses a webcam to monitor the oscillations of a body attached to a spring, negotiating simple harmonic motion. The effect of the viscous force of a liquid on the damping of the harmonic motion is also investigated.
Matlab Codes Harmonic
Sample Results Free Oscillations in Air
Damped Oscillations in Water
Further Readings and References

"Webcam as a measuring tool in the undergraduate physics laboratory", S. Nedev and V. C. Ivanova, European Journal of Physics 27, 1213 (2006).

"Demonstration of dry and viscous damping of an oscillating pendulum", L.F. Zonnetti et al., European Journal of Physics 20, 85 (1999).

Pictorial Procedure (1.1)

1. Provided apparatus
1. Provided apparatus
2. Webcam
2. Webcam
3. A spring attached to the metre rule
3. A spring attached to the metre rule
4. Attaching a mass hanger to the spring
4. Attaching a mass hanger to the spring
5. Adding weight in a mass hanger
5. Adding weight in a mass hanger
6. Setup for observing free oscillations
6. Setup for observing free oscillations
7. Your M-files must be in the current directory of MATLAB
7. Your M-files must be in the current directory of MATLAB
8. Image view for free oscillations
8. Image view for free oscillations
9. Placing mass-spring system into water
9. Placing mass-spring system into water
10. Setup for damped oscillations
10. Setup for damped oscillations
11. Image view for damped oscillations
11. Image view for damped oscillations
12. Cropped image view
12. Cropped image view
13. Image processing view
13. Image processing view
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