Simple pendulum

Investigation into simple harmonic motion using a mass-spring system and a simple pendulum

Equipment

Method

1. Open up the LabCity practical labelled ‘A simple pendulum’.

2. Pull the pendulum to the side (less than 15 degrees) and release it so that it has a small amplitude and travels in a straight line.

3. Note time after 10 complete oscillations and record this time, T10.

4. Divide T10 by 10 to find the time period T of the pendulum and record this.

5. Decrease the length L by 0.100m and repeat this, reducing L by 0.100m each time down to 0.500m.

6. Repeat the experiment twice more and find and record the mean T for each L.

Graphs and calculations

Plot a graph of T^2 against L and draw a line of best fit. The gradient will be 4π^2 divided by g.