00:01
Okay, we want to look at the force diagram for this situation.
00:05
We've got some blocks.
00:11
I'm just going to call this 2 and this one 1.
00:14
And you're pulling 20 newton force on 2.
00:18
We're going to call that f2.
00:20
And then there's a rope connecting the 1 kilogram object to the wall.
00:28
We're going to call that force, or tension i guess you could call it f1.
00:32
Okay, so let's just draw the free body diagrams here.
00:35
I'm going to represent these by dots.
00:39
So let's do kind of the obvious ones first.
00:43
So you're pulling with that force f2.
00:47
And then there's a force from that other rope f1.
00:53
Okay, the other obvious ones would be probably gravity, right? so m1 times g, m2 times g.
01:01
And then we start to get into some a little more tricky ones...