{'fraction_non_alphanumeric': 0.018158236057068743, 'fraction_numerical': 0.00648508430609598, 'mean_word_length': 4.436619718309859, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
The balancing act: a new approach

In many gift shops it is easy to find metal figures on a support, that, after an initial displacement, continue a simple harmonic movement. The equilibrium of these bodies is not related to the supporting base but is explained by the fact that the mass distribution is such that the centre of gravity (CG) of the figure is always found in the same vertical plane below the fulcrum. The object of this work is to compare the period obtained experimentally with the result obtained when considered as a physical pendulum of period (Resnick and Halliday 1977): T=2 pi square root I/mgd where I represents the moment of inertia of the body with respect to the axis x through the fulcrum and d is the distance between the CG and the fulcrum.