13098 5 A pivot is placed under the centre of a non-uniform wooden pole and the pole tilts as shown in Fig. 5.1. Fig. 5.1 (a) (i) How can you tell from the diagram that the pole is non-uniform? [1] (ii) On Fig. 5.1, mark a possible location for the centre of gravity of the pole. Label this point X. [1] (iii) Describe how the position of the centre of gravity could be located. [2] 13098 (b) Assume the position of the centre of gravity of the wooden pole is known. Using a mass of known value and the arrangement shown in Fig. 5.1, describe an experimental procedure that uses the principle of moments to obtain an accurate value for the mass of the pole. [5] THIS IS THE END OF THE QUESTION PAPER Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright holders may have been unsuccessful and CCEA will be happy to rectify any omissions of acknowledgement in future if notified. Examiner Number SPH32/6 262686 DO NOT WRITE ON THIS PAGE For Examiner’s use only Question Number Marks 1 2 3 4 5 Total Marks