Experiment Refinement

To find out more about the movement of a pendulum, I have decided to further my research to other variables affecting the oscillations of a pendulum:

1. Viscosity (refined experiment procedure; 1cSt, 10cSt, 20cSt, 30cSt)

2. Length of pendulum (5cm, 10cm, 15cm)

I will be modifying the method of measuring the time per oscillation. Previously, I chose to time only one period of oscillation, which resulted in inaccurate results. Thus, to obtain more accurate results, I will be measuring the total time taken for the pendulum to complete 5 oscillations and then divide the total time by 5 to obtain one period of oscillation. 

Firstly, I will be conducting an experiment with different lengths of pendulum in air. This will act as a control before I move on to conducting the experiment in liquids of different viscosities. From this, I will also be able to find out if the length of the pendulum affects the period of oscillation proportionally. (E.g. x2 length of pendulum = x2 period of oscillation?)

Next, I will then conduct the experiment with the 10cm long pendulum in the liquids of different viscosities. I will be able to find out if the viscosity of the liquid affects the period of oscillation proportionally. (E.g. x2 viscosity of liquid = x2 period of oscillation?)