A pressure-force scan varies pressure across three rows while holding area fixed, showing how the force F = P * A scales linearly row by row. The arithmetic is exact only for the stated pressures, areas, and rows in the ideal uniform-loading model. Real fluids add viscosity, turbulence, compressibility, geometry tolerance, calibration, and measurement uncertainty.
Pressure and area each visibly change force. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Base patch gives eighteen newtons
Pressure 6 pascals over area 3 square metres gives force 18 newtons.
F=6×3=18
Lower pressure lowers the force
Pressure 4 pascals over area 3 square metres gives force 12 newtons.
F=4×3=12
Wider area raises the force
Pressure 6 pascals over area 5 square metres gives force 30 newtons.