A horizontal force `F` pushes a `4kg` block `(A)` which pushes against a `2kg` block `(B)` as shown The have an acceleration of `3m//s^(2)` to the right There is no friction between the blocks and the surface on which they slide. What is the net force `B` exerts on `A`
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A block of mass m is moving on a rough horizontal surface. mu is the coefficient of kinetic friction between the block and the surface. What is the net force exerted by the surface on the block?

A boy of mass 50 kg produces an acceleration of 2(m)/(s^2) in a block of mass 20 kg by pushing it in horizontal direction. The boy moves with the block such that boy and the block have same acceleration. There is no friction between the block and fixed horizontal surface but there is friction between foot of the boy and horizontal surface. Find friction force (in Newton) exerted by the horizontal surface on the boy.

A boy of mass 50 kg produces an acceleration of 2(m)/(s^2) in a block of mass 20 kg by pushing it in horizontal direction. The boy moves with the block such that boy and the block have same acceleration. There is no friction between the block and fixed horizontal surface but there is friction between foot of the boy and horizontal surface. Find friction force (in Newton) exerted by the horizontal surface on the boy.

A boy of mass 50 kg produces an acceleration of 2(m)/(s^2) in a block of mass 20 kg by pushing it in horizontal direction. The boy moves with the block such that boy and the block have same acceleration. There is no friction between the block and fixed horizontal surface but there is friction between foot of the boy and horizontal surface. Find friction force (in Newton) exerted by the horizontal surface on the boy.

The elevator shown in fig. is descending with an acceleration of 2 m//s^(2) . The mass of block A is 0.5 kg. The force exerted by the block A on the block B is

A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5m//s^2 , the frictional force acting on the block is…………newtons.

A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6. If the acceleration of the truck is 5m//s^2 , the frictional force acting on the block is…………newtons.