00:01
Hi guys, now in this problem, for each of the following, we need to draw the fbd.
00:04
The first problem is that a box of 40 kg on level surface floor is pulled by a rope attached to a box.
00:11
The rope makes an angle of 21 degree with the horizontal.
00:15
We need to draw the fbd of this situation.
00:17
This is a floor that i have and this is an object.
00:21
Here i have an obsect.
00:23
I pull this object with a rope.
00:27
Let's say the force applied by rope is what have.
00:31
This angle from the vertical is equal to this is 20 degree sorry 21 degree now i consider mg which is acting downward the normal which is act like this and say this is 40 times of a g this is normal force f of n now let's do a component of these forces this is f cause of 21 degree this is f sign of 21 degree this is f sign of 21 degree this is f sign of 21 degree this is f of 21 degrees.
01:10
Now since while this is moving a friction force will be opposed the movement of these blocks...