A block of weight 20 N is placed on a horizontal table and a tension T is applied on the block . Tension can be increased to 8 N before the block begins to slide . A force of 4 N keeps the block moving at constant speed , once it has been set in motion . Find the coefficients of static friction and kinetic friction].

A20 kg block is initally at rest. A 75 N force is required to set the block in motion. After the motion starts, a force of 60 N is required to keep the block moving with constant speed. The coefficient of static friction is

A block is placed on a rough horizontal plane. Three horizontalforces are applied on the block as shown in the figure. If the block is in equilibrium, find the friction force acting on the block.

A 10 kg block is initially at rest on a rough horizontal surface. A horizontal force of 60 N is required to set the block in motion . After it is in motion , a horizontal force of 50 N is required to keep the block moving with constant velocity . The ratio coefficient of static and kinetic friction is

A block of mass 2 kg is placed on the floor (mu=0.4) . A horizontal force of 7 N is applied on the block. The force of friction between the block & floor is f_(s) . Find the f_(s) .

In the figure shown, a block of weight 10 N resting on a horizontal surface. The coefficent of static friction between the block and the surface mu_(s)=0.4 . A force of 3.5 N will keep the block in uniform motion, once it has been set in motion. A horizontal force force of 3N is applid to the block, then the block will

A 20 kg block is initially at rest on a rough horizontal surface. A horizontal force of 75 N is required to set the block in motion. After it is in motion, a horizontal force of 60 N is required to keep the block moving with constant speed. The coefficient of static friction is

A block of weight 100N is lying on a rough horizontal surface.If coefficient of friction 1/sqrt3 .The least possible force that can move the block is