A metal square plate of `10cm` side rests on `2mm` thick caster oil layer. Calculate the horizontal force needed to move the plate with speed `3cm s^(-1) : (` Coefficient of viscosity of caster oil is 15 poise. )

A metal plate 10 cm square rests on a 2 mm thick caster oil layer. Coefficient of viscosity of caster oil is 15 poise. The horizontal force needed to move the plate with speed 3 cm s^-1 is

A metal plate of area 5 cm ^(2) is placed on a 0.5 mm thick castor oil layer .If a force of 22,500 dyne is needed to move the plate with a velcity of 3cms^(-1) Calculate the coeffcient of viscosity of castor oil.

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.

A metel plate 100 sq cm in area rests on a 2-mm layer of castor oil, whose coefficient of viscosity is 1.55 SI units. Calculate the horizontal force required to move the plate with a speed of 3 cm per second. [Hint: F=-etaA(dv)/(dx)."Here"(dv)/(dx)=(3xx10^(-2)ms^(-1))/(2xx10^(-3))=15s^(-1) .]

A circular metal plate of radius 5 cm, rests on a layer of castor oil 2mm thick, whose coeffeicient of viscosity os 15.5 dyn e cm^(-2)s . Calculate the horizontal force required to move the plate with a speed of 5 cms^(-1) . Also calculate strain rate and shearing stress.

There is a 1 mm thick layer of oil between a flat plate of area 10^(-2)m^(2) and a big plate. How much force is required to move the plate with a velocity of 1.5 cm//s^ . The coefficient of viscosity of oil is 1 poise

Aflat plate of area 0.05 m^(2) is separated from another large plate at rost by a liquid layer of uniform thickness 1mu m . The tangential force needed to move the smaller plate with a constant velocity of 10 cm s ^(-1) i s 20 N. Calculate the coefficent of viscosity of the liquid.