00:01
Hello, here i have to find the resultant of the three forces.
00:05
Ah, let's do this.
00:11
So, let's move all the three forces to the origin for the simplicity, and now let's show this forces 300 pounds, which makes an angle of 30 degree, like this.
00:24
Like shown in the drawing, the next second force is 390 pounds.
00:30
And here, this makes an angle alpha.
00:34
Alpha is a tangent of 512s now let's calculate this that's 22 .6 degree approximately and now let's show the force of 722 neutons and this force makes angle beta and angle beta is a tangent of 2 over 4 now let's calculate this.
01:19
That's 26 .6 degree approximately.
01:23
So now let's find the x component of the resultant force.
01:25
That's 390 pounds times cosine of 22 .6 plus 700 pounds times cosine of 26 .6 degree minus 300 pounds times sign of 30.
01:51
And now let's calculate this.
02:17
That's 856 pounds.
02:20
And now let's find ry...