Two blocks of mass 2kg and 1kg are at rest on a smooth surface as shown. There is friction between 2kg and 1kg block with `mu = 0.5`. Find maximum force to be applied on 1 kg for the two blocks to move together.

Two blocks of masses 4 kg and 6 kg are kept on a rough horizontal surface as shown. If the acceleration of 6 kg block is 5n , then n is :

Two blocks of masses 1 kg and 2 kg are placed in contact on a smooth horizontal surface as shown in fig. A horizontal force of 6N is applied d(a) on a 1-kg block. Find the force of interaction of the blocks. .

Three blocks of masses 3kg ,2kg and 1kg are placed side by side on a smooth surface as shown in figure. A horizontal force of 12N is applied on 3kg block. Find the net force on 2kg block.

A block of mass m is placed on another block of mass M lying on a smooth horizontal surface as shown in the figure. The co-efficient of friction between the blocks is mu . Find the maximum horizontal force F (in Newton) that can be applied to the block M so that the blocks together with same acceleration? (M=3kg, m=2kg, mu=0.1, g=10m//s^(2))

Two blocks of masses 4kg and 2kg are placed side on a smooth horizontal surface as shown in the figure. A horizontal force of 20N is applied on 4kg block. Find (a) the acceleration of each block. (b) the normal reaction between two blocks.

Three blocks of masses 5 kg, 3 kg and 2 kg are placed on a rough surface as shown in figure. Coefficient of friction between block and surface is same for all the blocks and is equal to mu = 0.2 . A horizontal force of 15 N is applied on 5 kg block. The force exerted by 3 kg block on 2 kg block is : (g = 10 m/ s^(2) )

A 3 kg block is placed over a 10 kg block and both are palced on a smooth horizontal surface. The coefficient of friction between the block is 0.2 . If a horizontal force of 20 N is applied to 3 kg block, accelerations of the two block in ms^(-2) are (take, g=ms^(-2) )

On a smooth horizontal surface a block A of mass 10kg is kept. On this block a second block B of mass 5kg is kept. The coefficient of friction between the two blocks is 0.4 .A horizontal force of 30N is applied on the lower block as shown. The force of friction between the blocks is