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# 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 - CBSE Class 9 - Science

#### 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 ?

#### Solution

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.

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#### APPEARS IN

Lakhmir Singh Solution for Science for Class 9 Part 1 Physics (2016 to Current)
Chapter 3: Gravitation
Short Answers | Q: 51.1 | Page no. 125

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Solution 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 Concept: Mass and Weight.
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