A metal block of base area is connected to a 0.02 kg mass via a string that passes over an ideal pulley as shown in figure. A liquid film of thickness 0.6 mm is placed between the block and the table. When released the block moves to the right with a constant speed of 0.17 m/s. The co-efficient of viscosity of the liquid is :
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The coefficient of viscosity of a liquid can be defined from the equation where F is the tangential force between two liquid layers of area A. The layers are at a distance dy apart and du is the difference in their velocities.
Suitable unit for dv/dx is:
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