Question

A girl is wearing a pair of flat shoes. She weighs 550 N. The area of contact of one shoe with the ground is 160 cm². What pressure will be exerted by the girl on the ground if she stands on two feet ?

Answer 1

Area of one foot = 160 cm² (160/10,000 = 0.016 m²)
Area of two feet = 0.016 × 2 = 0.032m²
Pressure = ?
Weight = 550 N
`"Pressure" = "Force"/"Area"`
= `550/0.032`
Pressure = 17,187.5 Pa or N/m²
Ans: Pressure = 17,187.5 Pa or N/m².