The Influence of Airflow Speed on the Buoyancy and Equilibrium Height of Lightweight Spherical Objects

The relationship between object density and equilibrium height in airflow is complex and requires investigation for understanding aerodynamic principles. Thus, this study has investigated the behavior of different density balls in controlled airflow conditions using a hairdryer with variable speeds. Ball samples included a ping pong ball (40 mm diameter), an expanded polystyrene ball (50 mm diameter), and an ocean rubber ball (55 mm diameter), tested at both low and high airflow speeds. Testing of balls under controlled airflow conditions was conducted with different ball densities. For the ping pong ball and expanded polystyrene ball, height differences were observed, with the expanded polystyrene ball achieving the highest equilibrium point. On the other hand, the ocean rubber ball, having the highest density, showed the lowest height difference across both airflow speeds. The expanded polystyrene ball shows efficient height gain in airflow compared to denser balls, demonstrating the inverse relationship between density and equilibrium height