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March 28, 2017

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Estimate the buoyant force that air exerts on you. (To do this, you can estimate your volume by knowing your weight and by assuming that your weight density is a bit less than that of water.) Assume that your weight is a about 1000 N, for example.

  • physics - ,

    Density of man is D = 1000 kg/m^3,
    m•g =V•D•g = 1000 N
    The man's volume
    V = 1000/( D•g) =1000/(1000•9.8) =0.1020408 m^3

    Density of air d = 1.2929 kg/m^3
    The buoyant force is equal to the weight of the air
    displaced by the man
    F =V•d•g =0.1020408•1.2929•9.8•1.2929 N

  • physics - ,

    it is telling me its wrong

  • physics - ,

    1.5 N

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