Degrees of freedom

Krancjar

I'm currently taking a course in mechanics but am from an electronic background Due to missing out on the first few lectures, through no fault of my own (timetable clash) i'm a bit lost. See example problem below



I understand Grubler's equation: M = 3(N-1) - 2f1 - f2 is to be used.

I can't figure out how to find f1

In my solution it says f1 = 3 but i can't figure out where that is coming from...

Any help is much appreciated.

CatFromHue

i did a quick internet search to see what grublers equation was about as i originally thought you were on about fea.

the below link might be of some help

http://www.nuigalway.ie/mechbio/downloads/FinThMachines2.doc

apoeiguq3094y

Krancjar wrote: »

I'm currently taking a course in mechanics but am from an electronic background Due to missing out on the first few lectures, through no fault of my own (timetable clash) i'm a bit lost. See example problem below



I understand Grubler's equation: M = 3(N-1) - 2f1 - f2 is to be used.

I can't figure out how to find f1

In my solution it says f1 = 3 but i can't figure out where that is coming from...

Any help is much appreciated.

F1 is the number of joints with 1 dof.
(1-2),(1-3),(2-3)

consider the base (1) as another link.

desertstorm

Anywhere you have a connection to ground, that counts as no.1