00:01
And let me jot down some things.
00:02
We know, gee, we're given a mass of 5 .50 kilograms, and that equals 40 degrees.
00:21
And we need to find the tension.
00:27
So first, let's do a free body diagram.
00:42
So this will be 40 degrees, and this will be 40 degrees.
01:08
Okay.
01:10
This is t1.
01:12
This is t2.
01:14
This is mg.
01:20
Okay.
01:24
So we know that the net force is a sum of each direction.
01:27
So we have to sum our forces in our x and the sum of our forces in our y.
01:36
So this will be t1 time the cosine of 40 equals t2 times the sign of 40.
02:00
Then this one will be t2 times the cosine of 40.
02:11
Minus t 1 times the sign of 40 equals m g equals 54 so then i know that t times the cosine of 40 we add one and two together okay so i'm going to have t 2 let's see cosine of 40 it'll be minus the sign of 40 times the tangent of 40 that'll equal 54 so t 2 so t 2.
03:39
Equal 283 newtons...