Physics

Please who can help me out.
Derive the coefficient of surface tension for water

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  1. This is not something one can derive, it has to be measured.
    h=2γcosθ/ρgr

    Where:

    h is the height the liquid is lifted in capillary tube.

    γ is the liquid-air surface tension.

    ρ is the density of water.

    r is the radius of the capillary tube.

    g is the acceleration due to gravity = 9.81 m/s2

    θ is the angle of contact between glass and water. (for glass water interface = 0 )

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    bobpursley

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