Home
Class 11
PHYSICS
A layer of castor oil "1" mm thick is s...

A layer of castor oil "1" mm thick is spread on horizontal floor. A block is placed on floor and pulled horizontally at constant speed of `2ms^(-1)` .The face of block touching surface has an area of `20cm^(2)` and coefficient of viscosity of oil is "10" poise.The force applied on block parallel to surface is

Promotional Banner

Similar Questions

Explore conceptually related problems

A force of 100 N is applied horizontally on a block of mass 10 kg placed on a horizontal floor of coefficient of friction 0.5, The acceleration of the block is ("take" g = 10 ms^(-2))

A block of weight 200N is pulled along a rough horizontal surface at constant speed by a force 100N acting at an angle 30^(@) above the horizontal. The coefficient of friction between the block and the surface is

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 block placed on a rough horizontal surface is pulled by a horizontal force F Let f be the force applied by the rough surface on the block . Plot a graph of f versus F .

A block of mass 1 kg is placed on a horizontal surface . The reaction force to the weight of the block is

A block moving on a horizontal surface with velocity 20 ms^(-1) comes to rest because of surface friction over a distance of 40 m. Taking g = 10 ms^(-2) , the coefficient of dynamic friction is :

A block of mass 5 kg is at rest on a smooth horizontal surface. Water coming out of a pipe horizontally at the rate of 2 kg s^(-1) , hits the block with a velocity of 6ms^(-1) .The initial acceleration of the block is,

A block of 10kg is pulled at a constant speed on a rough horizontal plane by a force of 20N . Calculate the coefficient of friction ?

A horizontal force of 1N is needed to keep a block of mass 0.25kg sliding on a horizontal surface with a constant speed. Find the coefficient of sliding friction. (g=10ms^(-2))

A block of mass m is placed on a rough horizontal floor and it is pulled by a ideal string by a constant force F as shown. As the block moves towards right the friction force on block