00:01
Problem we have been given that there are two blocks and these two blocks have the masses 3 kg and 2 kg respectively as shown here and these two blocks are being pushed by a horizontal force of 20 newtons and of course they move in the direction of the force and considering the coefficient of kinetic friction that's existing between the surface and each of the blocks is point so let's represent the coefficient of friction using 0 .2.
00:34
And now we have to draw the free body diagram which indicates all the forces acting here.
00:40
So first we draw all the forces that's acting on the 3 kg object.
00:45
So there will be weight up this block that will be three times the acceleration due to gravity, which is g.
00:52
And there will be normal force that will be applied by the surface in contact between this block and the floor.
01:00
Also, there is applied force that's 20 newtons and there is a normal force that's applied by the contact surface between these two blocks.
01:11
And let's take that as n -dash.
01:14
And both these blocks will accelerate in the direction of the force applied.
01:19
That's to the right.
01:20
And they will have same acceleration because they are acting as the single entity here.
01:25
And we have another 2 kg block.
01:27
So with respect to that, there will be weight, there will be normal force...