Do the solutions have an error linear+rotational motion of a rigid body

[Femme_physics]

I find it hard to believe I forgot my mechanics... I think the solution manual has a mistake

Homework Statement

http://img225.imageshack.us/img225/8018/mech1l.jpg

Homework Equations

http://img337.imageshack.us/img337/8733/mechform.jpg

The Attempt at a Solution

http://img715.imageshack.us/img715/563/mech2m.jpg

 

[tms]

Maybe I don't understand the problem, but, assuming \omega is in the plane of the paper, and assuming B is the unlabelled vertex, aren't A and B merely in uniform circular motion about O?

 

[Femme_physics]

Omega is rotational speed. In our case the problem defines omega for shaft OA. B is just a point on a shaft. A and B are in uniform circular motion around a certain instantaneous axis of rotation. It's not "O". I'll try to get on a computer later so I can graph it...

 

[I like Serena]

Looks correct to me.

What does the solution manual say?

 

[Femme_physics]

Vb = 2.37 [m/s]

I just wanted to make sure I didn't forget the material since I'm suppose to teach some students about it. Seeing a wrong answer to mine made me lift an eyebrow, but I'm glad my suspicion was verified it's not my mistake.

 

[tms]

Omega is rotational speed. In our case the problem defines omega for shaft OA. B is just a point on a shaft. A and B are in uniform circular motion around a certain instantaneous axis of rotation. It's not "O". I'll try to get on a computer later so I can graph it...

It would be helpful if, in the future, you gave the text of the problem.

 

[Femme_physics]

Ah but there was none :P

 

[tms]

That would explain that.