# HOMEWORK H31.B ## 10 thoughts on “HOMEWORK H31.B”

1. Mansha Sunil Chimnani says:

How do I know the direction for the moment at A? Can we assume its in a particular direction and find reaction forces?

1. Charles L Simek says:

Yes, make an initial assumption and if you are right your answer will be positive and negative otherwise.

2. Mason Lee Trenaman says:

If you solve for the reactions at A, you can find the direction of the moment assuming a positive value means a counterclockwise moment. If you get a negative value in your calculations, you know it's in the clockwise direction.

1. Chirag Pradeep Nimani says:

I believe we need to assume the moment at A initially. If we assumed the moment to be anticlockwise at A, and if we got the moment as negative, we can just reverse it when we are graphing it and to further solve the question

1. Zongxin Yu says:

Thank you Mason, Chirag.

3. Elliott Huy-Anh Eve says:

Is it possible for the shear force diagram to never be 0?

1. Elliott Huy-Anh Eve says:

Scratch that, accidentally made a mistake in calculating the reaction at A.

2. Ruth Ivania Guerra says:

I believe you always need to go back to zero since it is in equilibrium. Not fully sure tho.

1. Zongxin Yu says:

Assuming you only have wall on the left and P at the free end. Then if you plot shear force diagram it would constantly V(x)=P, but it's indeed equilibrium. So this reasoning might cause some problems.

4. Cullen James Barber says:

You are right, you do always need to go back to zero on the graphs.