Determine the x, y, z components of reaction at A and B
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- čas přidán 7. 08. 2024
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The bar AB is supported by two smooth collars.
At A the connection is with a ball-and-socket joint and at B
it is a rigid attachment. If a 50-lb load is applied to the bar,
determine the x, y, z components of reaction at A and B.
I was stuck on this question for so long god bless you
Why is there no Ay ?
Why do you ignore the reactions at fixed supports C,D,E,F?
It's because in the text book he got the problem from only asks for components of reaction at A and B.
The problem isn't written on screen here for some reason. He reads it out loud at the beginning though - " The bar AB is supported by two smooth collars.
At A the connection is with a ball-and-socket joint and at B
it is a rigid attachment. If a 50-lb load is applied to the bar,
determine the x, y, z components of reaction at A and B."
why is there no rxn moments at A
Dang, your new intro is sick. Thanks for the help.
Why is there no Ay?
Also, why is there no Ay? It's confusing because if it was only a ball-and-socket joint then there would be an Ay. But are you saying that since there is also a collar, then there is no Ay? Is it because the ball-and-socket joint will 'slide' when the collar moves?
Because the collar does not restrict axial movement of the pipe passing through it.
Why is there no Ay?
did you figure it out?
@@OldestDream4951 why is he ignoring all the other support reactions????
doesnt make sense to me how theres a reaction force of Az cuz theres literally no force in the z direction. we aren't given weight or any applied force in the z direction so theres an Az reacting to nothing
Quick break down of these types of questions
Look at the types of attachments/connections/pins whatever and look at what is restricted vs not,
Looking at A we see okay since its a slider along Y axis it can move freely along Y and if it wasnt attached should be able to rotate along the Y axis
In short at A it will be restricting forces in the X and Z direction, and also restrict movement in the x and y rotations
Looking at B since it's angled there will be forces and moments in all directions because its not in line with our cartesian axes
The answers my text book had/ said were
The bar AB is supported by two smooth collars. At A the connection is with a ball-and-socket joint and at B it is a rigid attachment. If a 50-lb load is applied to the bar, determine the x, y, z components of reaction at A and B.
[Ax = 16.7 lb, Bx = 16.7 lb, By = 50 lb, M_Bx = 300 lb ft, M_Bz = 0, M_By = 900 lb ft]
and i figure its only referring to magntiudes
bro this is all wrong. every answer
I thought you could only solve for 6 unknowns
these are wrong!