[Total: 12] 3. A student's plastic bottle of water tips over in class.
Plan an experiment to investigate how the quantity of water in a plastic bottle affects its stability.
The plastic bottle holds up to 2000 cm3 of water and has a height of 42 cm.
(a) Write a plan for the experiment, including:
the apparatus needed
• instructions for carrying out the experiment
the values you will use for the quantity of water
• how you will make sure your results are as accurate as possible
• the graph you will plot from your results
A diagram is not required, but you may add Fig. 4.1, or draw your own diagram, if it helps to explain your
plan.