Why Does an Object Feel Lighter Underwater?

Why Does an Object Feel Lighter Underwater?

Foundational Physics Short Answer: An object feels lighter underwater because the water provides an upward buoyant force, so less force is needed to hold it up. A spring scale supporting the same metal ball reads less underwater than in air, even though the ball’s...
Why Does Buoyant Force Exist?

Why Does Buoyant Force Exist?

Foundational Physics Short Answer: Buoyant force exists because water pressure is greater on the deeper parts of a submerged object. Water pushes on every part of a ball, but its stronger upward pushes on the lower surface outweigh its downward pushes on the upper...
Why Is Pressure the Same at the Same Depth?

Why Is Pressure the Same at the Same Depth?

Foundational Physics Short Answer: In connected water at rest, points at the same horizontal level have the same pressure. If pressure were higher on one side, it would push the water sideways until the imbalance disappeared. That is why connected vessels filled with...
Why Does Pressure Increase With Depth?

Why Does Pressure Increase With Depth?

Foundational Physics Short Answer: Pressure increases with depth in still water because a deeper point has to support the weight of more water above it. The deeper you swim in a pool, the greater the water pressure around you. At a given depth, that pressure acts in...