Chapter 13, Problem 65A

To determine

Difference between water pressure $1m$ below the surface of a small pond and $1m$ below the surface of a lake.

Answer to Problem 65A

Pressure is the same in both water bodies as it does not depend on volume but on depth.

Explanation of Solution

Introduction: Pressure is measured as force per unit area. Water pressure is the force that pushes water through pipes. Pressure of still water depends on the depth.

It is represented by: $P=density\times g\times depth$ , where $g=9.8m/s^2$

Pressure is proportional to depth and weight. It is independent of volume. Hence, the pressure is the same in $1m$ below surface of small pond and $1m$ below the surface of a huge lake.

Conclusion:Water pressure does not depend on the volume or the size of an object. It is dependent on the depth. Hence, the pressure is the same.