- The SI units for pressure is

**newton per metre squared (N/m² or Nm**

^{-2}). - One

**Nm**is known as one

^{-2}**Pascal (Pa)**.

#### Formula for Pressure

**bar**. 1 bar = 10

^{5}N/m², 1 millibar = 100N/m²

#### Maximum and Minimum Pressure

##### Examples: Calculating Pressure

A rectangular brick of weight 24 N, measures 60 cm × 20 cm × 30 cm. calculate the values of the
maximum and minimum pressures which the block exert when resting on a horizontal table.

Area of the smallest face = 0.2 × 0.3 = 0.06 m²

Area of the largest face = 0.6 × 0.3 = 0.18 m²

*Solution*Area of the smallest face = 0.2 × 0.3 = 0.06 m²

Area of the largest face = 0.6 × 0.3 = 0.18 m²