00:01
Hello, here we have to draw the three body diagrams for each mass, ma and m .b.
00:06
Let's do this.
00:07
Let's start from m .a, which sits on the incline, on the left part of the incline.
00:13
So it experiences gravity downwards.
00:21
And let's show the normal reaction force.
00:34
So the coefficient of friction between each surface and the block is different.
00:40
So that's why the friction forces will be different.
00:45
And here block a is moving upwards and block b is moving down the incline so therefore block a experiences tension once the experience is the friction force down the incline and the tension up the incline now let's introduce the axis for this block axis x1 and xx y1 and now let's show the angle of 51 which is also formed by the gravity and y -axis.
01:36
Now let's move on to the next part of this of the three body diagram to block two or block b.
01:46
This block b is experiencing gravity downwards, normal force perpendicular to the incline, tension up the incline and also also the friction force up the incline.
02:19
And now we have to introduce the x's y and x for this block...