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Calculating pressure

Physics

PRESSURE

Pressure is defined as the force acting normally (perpendicularly) per unit area . The SI units for pressure is newton per metre squared (N/m2). One Nm-2 is known as one Pascal (Pa). Pressure = normal force / area or pressure = thrust / area . Another unit for measuring pressure is the bar. 1 bar = 105 N/m2. 1 millibar = 100 N/m2.   Calculating Pressure Examples A rectangular brick of weight 10 N, measures 50 cm × 30 cm × 10 cm. calculate the values of the maximum and minimum pressures which the block exert when resting on a horizontal table. Solution Area of the smallest face = 0.3 × 0.1 = 0.03 m2. Area of the largest face = 0.5 × 0.3 = 0.15 m2. Maximum pressure = 10 N / 0.03 = 3.3 × 102 N/m2. Minimum pressure = 10 N / 0.15 = 67 N/m2. A man of… Read More »PRESSURE

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