00:01
Hello student, here first we have to find the angle of all three forces.
00:06
Now f1 is making an angle 35 degree with the positive x -axis.
00:11
Now the angle that f2 makes with the negative x -axis is given by, so let's assume that this angle is theta 2.
00:24
So theta 2 is tan inverse of 3 by 4, so which is equal to 36 .8 degree.
00:38
Now the angle that f3 makes with the negative y -axis, theta 3 is given by tan inverse of 0 .2 divided by 0 .4, so which is equal to 26 .5 degree.
01:07
So now the component of f1 along positive x -axis, x -axis is f1x, 600 cos of 35 degree, so which is equal to 491.
01:33
Its component along y -axis is 600 sin of 35 degree, so this is equal to 344.
01:50
Now the component of f2 along x -axis is minus of 500 cos of 36 .8 degree, so which is equal to minus 400.
02:10
The component of f2 along y -axis is 500 sin of 36 .8 degree, which is equal to 300.
02:23
So all these are in newton.
02:31
Now the component of f3 along x -axis is 800 sin of 26 .5 degree, which is equal to 357 degree.
02:52
Now the component of f3 along y -axis is 800 cos of 26 .5 degree, which is equal to minus, so this is minus 800, so this is equal to 716 degree.
03:16
Now the net force along x -axis fx is 491 minus 400 plus 357...