00:01
Suppose we have an inclined plane with an angle theta and we have a mass of capital m on the plane which is connected to a pulley via a string and then we have a smaller mass lowercase m.
00:13
And we want to know, suppose we have an inner radius little r and an outer radius capital r such that the smaller mass is connected to the smaller pulley like that.
00:26
Suppose we have the system is at rest and so we want to find an expression for the tension in this cable right here.
00:34
We'll call this just t for the moment.
00:37
So we'll have mg sine theta, which is the component of the weight in the opposite direction, just equals capital t.
00:46
And then for part c, the expression for the mass m.
00:52
Well our free body diagram is basically just going to look like this.
00:57
Sorry i have this random line that showed up.
01:00
We'll call this t prime.
01:03
So what we'll have is mg, little mg equals t prime.
01:07
For part d we want to know what's the tension in terms of m and g.
01:14
So i kind of already have that right there.
01:16
T prime is equal to mg...