A 40 kg girl wearing a high heels. The heels circular diameter is 1.2cm. what is the pressure exerted by the heel on the floor...?
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Answer:
A 50kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0cm. What is the pressure exerted by the heel on the horizontal floor ?
Explanation:
Mass of the girl, m=50kg
Diameter of the heel, d=1cm=0.01m
Radius of the heel, r=2d=0.005m
Area of the heel =πr2
=π×(0.005)2
=7.85×10−5m2
Force exerted by the heel on the floor:
F=mg
=50×9.8
=490N
Pressure exerted by the heel on the floor:
P=AreaForce
=490/(7.85×10−5)=6.24×106N/m2
Therefore, the pressure exerted by the heel on the horizontal floor is 6.24×106N/m2.
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