A plate of area `100 cm^(2)` is placed on the upper surface of castor oil, `2mm` thick. Taking the coefficient of viscosity to be `15.5` poise, calculate the horizontal force neccesary to move the plate with a velocity `3cm^(-1)`.

A plate of area 100 cm^(2) is placed on the upper surface of castor oil, 2mm thick. Taking the coefficient of viscosity to be 15.5 poise, calculate the horizontal force necessary to move the plate with a velocity 3cms^(-1) .

A plate of metal 0.1 m^2 in area rests on a layer of caster oil 0.2 cm thick whose co efficient of viscosity is 15.5 poise. Calculate the horizontal force required to move the plate with a speed of 0.3 m/s.

A metal plate of area 10^(-3)m^(2) is placed on a liquid layer of thickness 0.8mm . The coefficient of viscosity of that liquid is 24 poise .Then the horizontal force required to move the plate with a velocity of 1cms^(-1) .

A plate of metal 10 cm sq. rests on a layer of caster oil 2mm thick whose coefficient of viscosity is 15.5 dyn e cm^(-2)s . Calculate the horizontal force required to move the plate with a speed of 3 cm s^(-1) . Also calculate strain rate and shearing strees.