why negative sign is there in the Newton's law of viscosity?
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The negative sign indicates that the stress in the fluid opposes the velocity. ... By Newton's law, the viscosity is given by the quotient of the shear stress and the shear rate, i.e., πR 4·∆P/(8Q·L).
Answered by
1
Answer:
The negative sign indicates that the stress in the fluid opposes the velocity. ... By Newton's law, the viscosity is given by the quotient of the shear stress and the shear rate, i.e., πR 4·∆P/(8Q·L).
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