00:01
Here in this given problem, the first part which is marked as question number 4, the two forces acting on an object f 1 horizontal that is the longer one, f 2 this is the shorter one and that is vertical.
00:21
We have to find the third force applying which the object will be at rest.
00:27
So, first of all we find resultant of these two forces using parallel gram law of a tradition, this is the resultant of these two forces.
00:41
So, we should apply third force opposite to this resultant force.
00:49
So, this should be f 3.
00:51
So, applying f 3 in the given direction and having the given magnitude, the system will be at rest.
00:59
So, here we should mention to find the third force which will create equilibrium in the object.
01:30
First we find resultant to given forces and then a new force which is opposite to opposite to the resultant force will be actually the third force bringing the object at rest.
02:31
So, same explanation will work in all the three problems...