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28 November, 12:48

Rank the following in terms of increasing pressure:

a. A 10 kg object distributed on a square surface with dimensions 10 cm by 10 cmB. A 20 kg object distributed on a square surface with dimensions 10 cm by 10 cm

c. A 30 kg object distributed on a square surface with dimensions 20 cm by 20 cm

d. A 40 kg object distributed on a square surface with dimensions 30 cm by 30 cm

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  1. 28 November, 12:56
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    Answer;

    In order of increasing pressure;

    D < C < A
    B, has the highest pressure while D. has the least pressure

    Explanation;

    Pressure = Force / Area

    10 N = 1 Kg

    Therefore; for

    B. A 20 kg object distributed on a square surface with dimensions 10 cm by 10 cm.

    Pressure = 200/100

    = 2 N/cm²

    A. A 10 kg object distributed on a square surface with dimensions 10 cm by 10 cm.

    Pressure = 100/100

    = 1 N/cm²

    C. A 30 kg object distributed on a square surface with dimensions 20 cm by 20 cm.

    Pressure = 300/400

    = 0.75 N/cm²

    D. A 40 kg object distributed on a square surface with dimensions 30 cm by 30 cm

    Pressure = 400/900

    = 4/9 N/cm²
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