7 11141.03 Question 4 Requirements • Pendulum bob, string and split cork • Retort stand, clamp and boss • Stopclock to 0.01 s • Metre rule Preparation Tie the pendulum bob to the end of the string. Thread the pendulum string through the split cork. Position the split cork in the jaws of the clamp. Set the length of the pendulum to be 0.500 m. Leave the metre rule and stopclock beside the pendulum. Action at Changeover Return the length of the pendulum to 0.500 m and rezero the stopclock. 11141.03