Figure 8 shows a simple pendulum suspended from a ceiling that is too high to reach. The height of the ceiling is H. The centre of mass of the pendulum bob is a distance h from the floor when the pendulum is in the rest position.

A student uses the pendulum to determine H. The relationship between h and the period T of the pendulum is: T=2 \pi \sqrt{\frac{H-h}{g}} The student wants to use a graphical method to determine both H and g. Describe the procedure that the student should use to collect data that produce accurate determinations of H and g.[3 marks] Describe how the data can be analysed using a straight-line graph to determine H and g.[2 mark