Question
A square plate of 0.1 m side moves parallel to a second plate with a velocity of 0.1 m/s, both plates being immersed in water. If the viscous force is 0.002 N and the coefficient of viscosity is 0.01 poise, distance between the plates in m is
Answer: Option D
:
D
A=(0.1)2=0.01m2, η=0.01 Poise = 0.001 decapoise (M.K.S. unit),
dv=0.1m/s and F = 0.002 N
F=ηAdvdx ∴dx=ηAdvF=0.001×0.01×0.10.002=0.0005m
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:
D
A=(0.1)2=0.01m2, η=0.01 Poise = 0.001 decapoise (M.K.S. unit),
dv=0.1m/s and F = 0.002 N
F=ηAdvdx ∴dx=ηAdvF=0.001×0.01×0.10.002=0.0005m
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