00:01
Okay, so we have a situation like this, our mass is 10 kilograms, they want us to use g equals 10.
00:06
So do not be fooled into thinking that the labels for the strings have anything to do with their length, okay? because this is not of length 1 and that's not of length 2, okay? so it's very important to realize that, so don't be fooled by that.
00:26
Pay attention to the angles, okay? so in order to solve this, we'll call this one here, we'll call that one t1 and this one t2 and this one here will be t3, although t3 is really just mg, okay? so we'll draw a free body diagram for the knot.
00:51
There's t1, there's t2, you know that angle is 30 and there's our mg pointing down.
01:04
So we have to analyze the forces in the x and y direction, so that angle is 60, okay? so in the x direction, the plus x direction, we have t2 times the cosine of 30 minus t1 cosine of 60, that adds up to 0...