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11th Class Physics Mechanical Properties of Fluids / तरलों के यांत्रिक गुण Question Bank Mechanical Properties of Fluids Conceptual Problems

  • question_answer
    A liquid cannot withstand a shear stress. How does this imply that the surface of a liquid at rest must be level, i.e. normal to the gravitational force?

    Answer:

                    If the free surface of the liquid is not perpendicular to the gravitational force, then there will be  a component of force along the surface. The liquid will not be at rest in that case.


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