Railways Technical Ability Fluid Mechanics and Machinery Question Bank Fluid Mechanics

  • question_answer The coefficient of friction \[f\] in terms of shear stress \[{{\tau }_{0}}\] is given by:

    A) \[f=\frac{\rho {{v}^{2}}}{2{{\tau }_{0}}}\]                

    B) \[f=\frac{{{\tau }_{0}}}{\rho {{v}^{2}}}\]

    C) \[f=\frac{2{{\tau }_{0}}}{\rho {{v}^{2}}}\]                

    D) \[\frac{2\rho {{v}_{0}}}{{{\tau }_{0}}}\]

    Correct Answer: C


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