04/05/2024
When you add compressed air to a tire, the volume of the tire increases a little because the increase in air pressure inside stretches the rubber a little. Since the volume is larger, it displaces a greater volume of outside air, and that means the buoyancy force increases.
In addition to stretching the tire, the compressed air added to the tire also increases the weight of the air inside the tire. In fact, it will increase the weight of the air inside more than the increase in the buoyancy force. So the net buoyancy will decrease...... Observe
