A person weighs 60 kg. The area under the foot of the person is 150 cm2. Find the pressure exerted on the ground by the person. (Take g 10m/

Question

A person weighs 60 kg. The area under the foot of the person is 150 cm2. Find the pressure exerted on the ground by the person. (Take g 10m/s2)

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Sapo 4 years 2021-07-25T18:09:38+00:00 1 Answers 16 views 0

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  1. King
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    2021-07-25T18:11:37+00:00
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    Answer:

    40000 N/m²

    Explanation:

    Applying,

    P =  F/A………………. Equation 1

    Where P = Pressure, F = Force, A = Area.

    From the question,

    The force(F) exerted by the person’s foot is thesame as it’s weight.

    F = W = mg………… Equation 2

    Where m = mass of the person, g = acceleration due to gravity.

    Substitute equation 2 into equation 1

    P = mg/A……………. Equation 3

    Given: m = 60 kg, g = 10 m/s², A = 150 cm² = (150/10000) m² = 0.015 m²

    Substitute these values into equation 3

    P = (60×10)/0.015

    P = 600/0.015

    P = 40000 N/m²

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