That is the problem, it doesn't say anything about either P or M. I assume that M is supposed to be Moment, while P is a force, but the whole question is "The body in the picture is connected to the ground with a movable joint and slides without friction at A. Simplify the drawing and find the...
Thank you for the reply, BvU! However, I have to say that I read it and I'm quite lost. I know this may sound like a stupid question, but do I simply replace each "-" with a "+" in all three equations? Does it mean that no matter where the vector is heading, I just put "+" in the equation and...
It says exactly that the body slides at A with no friction. I don't know exactly what they mean by that either. What do you think about the equations though?
Homework Statement
The body is connected to the ground with a moving joint at B, the body slides with no friction at A.
Homework Equations
ΣF=0 => ΣFx=0 & ΣFy=0
ΣM=0
The Attempt at a Solution
First I made a drawing:
At this point I started calculating:
ΣFx=>P-R2-F1, so: P=R2+F1
ΣFy=>...
About the mass: that just shows how confused I am I guess... ;)
I know there should be an angle there, but it is not given. That's what confused me the most in the beginning, since most cases I have seen so far had at least one angle given. So, can I use sine and cosine in the exercise even...
Thank you for this very, very helpful reply!
I based the drawing on what teacher have shown to us during a lecture, that's exactly how he draws it and puts mass into a drawing. How should I put mass into a drawing?
I agree, the whole exercise is 1 line of text and a drawing. The text is...
I just thought of something, here's the latest drawing I just made:
I also decided to call the distance between A and O "a" and the distance between B and O "b".
In this case:
ΣFx: R1-Sx=0 => R1=Sx
∑Fy: R2-Sy+m=0 (I'm not sure if it should be + or - before m though)
Mo: m*a+R1+Sy*b-Sx*b+R2=0...
Thank you!
In this case, the drawing would look something like that:
And if the vertical force is F1 and horizontal force is F2, then the calculations would change to:
ΣFx=> -Sx - F2 = 0
ΣFy=> F1 - Sy - m = 0
Mo= m+Sy-F1+F2+Sx=0
Am I right?
One more problem that I noticed with such...
Thank you for such quick reply!
No, there are no values, the first drawing is all I got. About the hinge - that's where I think the moment (Mo) is, meaning that the rotation happens around the hinge. Does that sound reasonable?
Also, sorry if I use weird names for things sometimes, but I don't...
There isn't much data, I'm just supposed to simplify the drawing of the body OA and find the forces. The body has a mass m and is connected to the ground with a moving joint in O.
Below I post the drawing that I made. I changed the line into a force S, which I then divided into Sx and Sy. I...