4. A metal plate of area 10+ m² is placed on a
liquid layer of thickness 2x10-m. If the liquid
has coefficient of viscosity 2S.I.units the force
required to move the plate with a velocity of
3cm/s is
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Answer:
We are given that
Area of plate=
Thickness of oil layer=6 mm=
Force=
Velocity= 6 cm/s
We have to find the coefficient of viscosity of liquid.
Substitute the values then we get
Hence, the coefficient of viscosity of the liquid=0.1 poise
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