Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 2 (Q.No. 35)
35.
The viscosity of water is __________ than that of mercury.
Discussion:
72 comments Page 2 of 8.
Ajeet Singh said:
8 years ago
Decreasing order of viscosity.
Hg>water >petrol >air.
Hg>water >petrol >air.
Praveen sharma said:
8 years ago
Dynamic viscosity of mercury is higher then water. But kinematic viscosity (dynamic viscosity/ density). So kinematic viscosity of mercury is less than water.
Kajal said:
8 years ago
Viscosity of mercury is lesser than of water, because shear stress developed in water is more than mercury, this is taken from the relation viscosity is directly proportional to the shear stress and inversely proportional to velocity gradient.
Amit said:
8 years ago
Water viscosity is less than mercury. Please correct it.
Pradeep gk said:
8 years ago
The kinematic viscosity is the dynamic viscosity divided by the density. Mercury is a lot denser than water, so its kinematic viscosity is lower than the kinematic viscosity of water. But that's just because mercury is very dense.
Ravindra said:
8 years ago
It is only true for kinematic viscosity. Because mercury has large density than water.
Mohit said:
8 years ago
The dynamic viscosity of mercury is 1.52 and water is 0.894 cp but the kinematic viscosity is smaller for mercury because it has large density than water.
Om Prakash said:
8 years ago
Dynamic viscosity of 'hg' is slightly viscous than 'h20'.
But in kinematic viscosity, it reverses.
But in kinematic viscosity, it reverses.
Vinay said:
8 years ago
Shear stress developed in Mercury is more, not water. If you understand the definition of viscosity keenly. It is resistance offered between layers of liquid. Not between ground and liquid. Shear stress developed i.e resistance offered in Mercury so strong that it will not split into layers when compared water. So absolute viscosity of Mercury is more. Water's kinematic viscosity is more not dynamic viscosity.
N.l.patel said:
8 years ago
The viscosity of water is 0.89and mercury's viscosity is 1.56. Hence the viscosity of water is less than that of mercury.
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