Home
Class 12
PHYSICS
A flat plate of area 0.1 m^(2) is placed...

A flat plate of area `0.1 m^(2)` is placed on a flat surface and is separated from it by a film of oil `10^(-5)` m thick whose coefficielnt of .viscosity is `1.5 N sm^(-2) ` . The force required to cause the plate to slide on the surface at constant speed of `1mm s ^(-1) `is

A

10 N

B

15 N

C

20 N

D

25 N

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

A metal plate 5 cm xx 5 cm rests on a layer of castor oil 1 mm thick whose coefficient of viscosity is 1.55 Nsm^(-2) . Find the horizontal foce required to move the plate with a speed of 2 cm/s

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) .

Glycerine is filled in 25 mm wide space between two large plane horizontal surfaces. A thin plate of area 0.75 m^(2) at a distance of 10 mm from one of the surfaces is in a horizontal position be the plates inside the glycerine. It is dragged horizontally at a constant speed of 0.5 ms^(2) . Take coefficient of viscosity eta =" 0.5 Ns m"^(-2) . What is the force required to drag the plate at a constant speed (in newton) ?

flat plate is separated from a large plate by a layer of glycerine of thickness 3 xx 10^(-3)m . If the coefficient of viscosity of glycerine is 2 Ns//m^(2) what is the force required to keep the plate moving with a velocity of 6xx10^(-2) m//s . Area of the plate is 4.8 xx 10 ^(-3) m

Between a plate of area 100 cm^(2) and another plate of area 100 m^(2) there is a 1 mm , thick layer of water, if the coefficient of viscosity of water is 0.01 poise, then the force required to move the smaller plate with a velocity 10 cms^(-1) with reference to large plate is

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.

A metal plate 0.04m^(2) in area is lying on a liquid layer of thickness 10^(-3)m and coefficient of viscosity 140 poise. Calculate the horizontal force needed to move the plate with a speed of 0.040 m/s.

A thin square plate of side varphi=10 cm is dragged with constant velocity v=3 cm/s in an oil . The width 'd' of the oil column is 2mm. Square plate is placed symmetrically as shown in the figure. Assumed velocity of layer of oil at the end is negligible. The coefficient of viscosity is 150 poise. Find the horizontal force (in Newton) required to move the square plate with constant velocity

There is a 1mm thick layer of glycerine between a flat plate of area 100cm^(2) and and a big plate. If te coefficient of viscosity of glycerine is 1.0kg//m-sec , then how much force is required to move the plate with a velocity of 7 cm/sec.

The space between two large horizontal metal plates, 6 cm apart, is filled with a liquid of viscosity 0.8 N//m^(2) . A thin plate of surface area 0.01 m^(2) is moved parallel to the length of the plate such that the plate is at a distance of 2 m from one of the plates and 4 cm from the other. If the plate moves with a constant speed of 1 ms^(-1) , then