# Homework 7.2

## 13 thoughts on “Homework 7.2”

1. Lukas Karim Hessini says:

Is this the only problem we will use the superposition table?

1. Samantha Noelle Ferengul says:

For this homework, I believe so. The other problems want us to use the other two methods. In my solving, I only used it for this question

2. Scott Jay Shelton says:

For the reaction at C, do we use the v(x) equation for "0<x<a" or the "a<x<L"?

Same question, but for Aquaman?

1. Elijah Marcum says:

I believe you have to use both of them, an equation for each range of distance.

3. Emmett Byrne Hawkins says:

For part a, are we supposed to factor in all of the number values or do we leave it in terms of the variables?

1. Elizabeth Carol Foesch says:

To find an expression keep it in terms of the variables.

How would we determine the reaction at the roller for this problem?

1. Maretta Fitzharris says:

I believe you need to break up the beam and use one section of it to solve for that reaction there before you can solve for the reactions and moment at the wall.

5. Maretta Fitzharris says:

I'm having trouble figuring out how to solve for the individual deflection expressions using the table. I'm not seeing the point to solving for the reactions and moments on the beam when it seems like none of the equations on the table include a distributed load, moment, applied forces, and reactionary forces and I'm not using anything I solved for initially to find the deflection expressions.

1. Mehal Sharma says:

I'm also having trouble with this; I've gotten as far as solving for the reaction at C, but I don't know how to go about solving for the deflection of each section of the beam.

6. Ryan Alex Tischler says:

How far do we need to simplify our solutions to part a? Can we leave it in the three sperate terms from the loads? Do we need to combine all like terms?

7. Katherine says:

I'm confused on how to solve for the reaction Cy. I am assuming we are supposed to use the fact that v(0.2L) at the roller = 0, but I'm not sure what to do with that.

1. purdue_exclamation_mark says:

You can use the boundary condition that you mentioned with an applicable displacement equation for that position to solve for the value of Cy. In this case, x = 0.2L and v = 0. (you could use either the displacement equation from 0 to 0.2L or the one from 0.2L to 0.9L.