A block of mass `20kg` is pushed with a horizontal force of `90N`. It the coefficient of static and kinetic friction are 0.4 and 0.3, the frictional force acting on the block is `(g =10ms^(-2))` .

A block of mass 5 kg is lying on a rough horizontal surface. The coefficient of static and Kinetic friction are 0.3 and 0.1 and g=10m//s^(-2) If a horizontal force of 50N is applied on the block, the frictional force is

A block of mass 2 kg is pressed against a rigid vertical wall by a horizontal force of 100 N. If co-efficient of static and kinetic friction are each equal to 0.3 then find the magnitude and direction of frictional force on the block.

A force of 750 N is applied to a block of mass 102 kg to prevent it from sliding on a plane with an inclination angle 30^@ with the horizontal. If the coefficients of static friction and kinetic friction between the block and the plane are 0.4 and 0.3 respectively, then the frictional force acting on the block is

A block of mass 1kg is at rest on a rough horizontal surface having coefficient of static friction 0.2 and kinetic friciton 0.15, find the frictional forces if a horizontal force, (a) F=1N (b) F=1.96N (c) F=2.5N is applied on a block

A block of mass M is sliding down the plane. Coefficient of static friction is mu_(s) and kinetic friction is mu_(k) . Then friction force acting on the block is :

A block of mass 2 kg is pushed against a rough vertical wall with a force os 40 N. Coefficient of static friction being 05. Another horizontal force is 15 N, is applied on the block in a direction paralle to the wall. Will the block move? If yes in which direction? If no, find the frictional force exerted by the wall on the block.

A force of 100N is applied on a block of mass 3 kg as shown in the figure-2.164. The coefficient of friction between the surface and the block is 0.25.The frictional force acting on the block is: (Take g=10m/s^(2) )

A block of mass 6 kg is being pulled by force 24 N as shown . If coefficient of friction between the block and the surface is 0.6 , frictional force acting on the block is :