0:00
Hi there.
00:01
So for this problem, we have the situation that is shown in this figure.
00:08
So the question for this is to determine the force f that is represented in here.
00:16
And yeah, and also determined the where on the beam does this result in couple moment at.
00:26
Now, the information that we are given is that the total moment of, this that we're going to call this the sum of all of the torts should be equal to 450 pounds times feet.
00:43
Now to solve this problem first of all we're going to set the direction for the positive torque so we're going to set that for a countercloth wise motion the direction of the torque is going to be positive.
01:01
Now once we know this, we just need to simply use the sum of torts and then, well, we need to set what all, what are the forces that are making twerk in this case.
01:18
So as you can see from the figure, one of the forces that are making twerk is the 200 pounds that it being applied to these points.
01:26
And as you can see, the separation between the point of application of the force and the point of rotation is 1 .5 feet.
01:36
So that will be 200 times the radius 1 .5.
01:41
Now, this plus the force that is being applied, aft, as you can see, the angle between the position betwar from the point of application of the force and the point of rotation is 30 degrees, as it's shown in the figure, so we need to multiply this by cosine of 30...