Hi guys, Just a quick question. In my lecturers notes, he has mobility and degrees of freedom as different things. With a separate equation for each. However, when I went searching the net for some info because I couldnt understand the notes, I found it to be different. The sites I found on the web, which look legit, say they are the same thing. My lecturers notes say that Mobility = 3n-2p1-p2. And degree of freedom = MO -L. I have no idea what that L means. Can anyone explain this to me? Thanks.