Home
Class 11
PHYSICS
Three blocks of masses 3kg ,2kg and 1kg ...

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.

Text Solution

Verified by Experts

Since all the blocks will move with same acceleration(say a) in horizontal direction .Let us take all the blocks as a single system.

Net external force on the system is `12N` in horizontal direction.
Using `sumF_(x)=ma_(x),`
we get , `12=(3+2+1)a=6_(a)`
or `a=(12)/(6)=2m//s^(2)`
Promotional Banner

Similar Questions

Explore conceptually related problems

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 2kg,3kg and 5kg are placed in contact as shown in the diagram. A horizontal force of 30N is applied on 2kg block. Find the contact force between (a) 2kg and 3kg block and (b) 3kg and 5kg block.

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 4 kg, 2 kg and 1 kg respectively are in contact on a frictionless table as shown in the figure. If a force of 14N is applied on the 4 kg block, the contact force between the 4 kg and the 2 kg block will be

Two blocks of masses 3 kg and 2 kg are placed side by side on an inclined as shown in figuire A force F = 292 A force F = 20N is active on 2 kg block along the inclined .The coefficient of friction between the block and the inclined is same and equal to 0.1 .Find the normal force exerted by 2 kg block on 3 kg block

Three blocks A , B and C of masses 4kg , 2kg and 1kg respectively are in contact on a frictionless surface, as shown. If a force of 14N is applied on the 4kg block, then the contact force between A and B is.

Two blocks of masses 10 kg and 20 kg are connected by a massless string and are placed on a smooth horizontal surface as shown in the figure. If a force F=600 N is applied to 10 kg block, then the tension in the string is

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) )

Three blocks of masses m_(1) = 1kg, m_(2)=2kg and m_(3) = 3kg are placed in contact on a horizontal frictionaless plane as shown in figure. A force of 12 N is applied on m_(1) . Acceleration of the system is