Short Note

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 cm^{2}. What pressure will be exerted by the girl on the ground if she stands on two feet ?

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#### Solution

Area of one foot = 160 cm^{2} (160/10,000 = 0.016 m^{2})

Area of two feet = 0.016 × 2 = 0.032m^{2}

Pressure = ?

Weight = 550 N

`"Pressure" = "Force"/"Area"`

= `550/0.032`

Pressure = 17,187.5 Pa or N/m^{2}**Ans: Pressure = 17,187.5 Pa or N/m ^{2}.**

Concept: Concept of Weight

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