Mobility and degrees of freedom

  • Thread starter morry
  • Start date
  • #1
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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.
 

Answers and Replies

  • #2
1
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define mobility
 
  • #3
Degrees of freedom

Degrees of freedom is given by
DOF=3(N-1)-2P-H

N= number of links
p=numberof lowerpair
h=number of higher pair

lower pairs are sliding pair,cylindrical pair,spherical pair
higher pairs have only point contact.
eg;cam and follower
 

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