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Question

What is the SI unit of viscosity coefficient?


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Solution

  1. Definition: This same amount of friction is necessary to keep a velocity differential of 1cm/s amongst parallel layers of fluid.
  2. The coefficient viscosity is denoted by η.
  3. The S.I unit of viscosity coefficient is Newton-second/meter2 or Nsm-2.
  4. Formula: η=Frv. Here, F is the tangential force, r is the distance, and v is the velocity.

Therefore, the proportion of a fluid jet's actual velocity to its predicted velocity is the viscosity coefficient.


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