Question

The Newton's law of viscosity and a simple dashpot represent rheological model for

• A. St. Venant body
• B. Hookean body
• C. Non Newtonian liquid
• D. Newtonian liquid

Hint:

A Newtonian liquid obeys Newton's law of viscosity, where shear stress is proportional to rate of shear strain.

Answer 1

The Correct Option is D

Step 1: Newton's law of viscosity states that shear stress is directly proportional to rate of shear strain. \[ \tau=\mu\frac{du}{dy} \]

Step 2: Here, \(\tau\) is shear stress and \(\mu\) is coefficient of viscosity.

Step 3: A liquid which obeys Newton's law of viscosity is called a Newtonian liquid.

Step 4: A simple dashpot is a mechanical model that represents viscous behavior.

Step 5: Since Newtonian liquid shows linear viscous behavior, it is represented by a dashpot. \[ \boxed{\text{Newtonian liquid}} \]