Question

A man of mass 50 kg is standing on the floor. Each of his feet has an area of 40 cm2. Find the pressure exerted by him on the floor

Answer 1

Given:

• Mass of man = 50 kg.
• Area of each feet = 40 cm².

To find:

• Pressure exerted on floor ?

Calculation:

Pressure is a scalar quantity characterized by the perpendicular force distributed per unit area of surface.

$Pressure = \dfrac{force}{area}$

$\implies Pressure = \dfrac{mg}{2 \times (feet \: area)}$

$\implies Pressure = \dfrac{50 \times 10}{2 \times \dfrac{40}{ {10}^{4} } }$

$\implies Pressure = \dfrac{5 \times {10}^{5} }{8 }$

$\implies Pressure = 6.25 \times {10}^{4} \: Pa$

So, pressure on floor is 6.25 × 10⁴ Pascal.