How do coconut stay afloat on water?

1. Density Difference: The key factor is the difference in density between coconut and water. Desnity is the mass of an object per unit volume. Coconut's density is lower than that of water. This means that for the same volume, a coconut has less mass compared to water. As a result, it experiences a net upward buoyant force when placed in water.

2. Air Pockets and Hollow Structure: Coconuts have a unique structure. Inside the coconut shell, there is a considerable amount of air-filled space. These air pockets act like tiny balloons that trap air. The trapped air reduces the overall density of the coconut, making it less dense than water.

3. Shape and Surface Tension: The shape of a coconut also contributes to its ability to float. Its round and smooth surface creates minimal resistance when placed in water. The surface tension of water acts on the coconut's surface, helping to support its weight.

These three factors- density difference, air pockets, and shape- all work together to keep a coconut buoyant, allowing it to stay afloat on water.