73 thoughts on “Exam 1”

    1. I have been working through the homework and making sure I understand it. If I don't, I make sure to watch the walk through videos posted after the due date. Additionally, I read the lecturebook at the beginning of each weel so when lecture comes, I can be focused more on how to solve the problems rather than the concepts and taking notes on them.

    2. I've just been going over the lecture example problems that we didn't get to/focus too much on in class. Those tend to give you some special cases and new things to think about, and it really helps me to grasp the concepts.

    3. I find it very useful to look on YouTube for solutions to practice problems, in addition to reviewing the homeworks and lectures. The solution videos often provide a simple way of thinking about each problem and can be helpful for understanding the mechanics on a deeper level.

    4. I think it is really important to go through the homework problems. And in addition to what everyone said also the conceptual question. That way you make sure to know the concepts behind the problems.

    5. A lot of Practice! Look over homework and go through homework solution videos until you think you have a grasp, then test yourself with past exams and check answers. Take past exams like an actual exam: no notes and keep a timer.

    6. I usually prepare for exams by doing practice exams untimed and with open notes, then doing practice exams untimed without notes, and then doing practice exams timed and without notes.

    7. Past exams taken in an exam setting is you best bet here. Using that, you can see where you need to practice. With the book you can then practice a bunch on the areas you need help in. Then take another practice exam and repeat the process.

  1. To prepare for the exam, I am doing past exam problems and then also trying extra examples we did not cover in class and checking with the example solutions videos.

  2. In addition to doing past exam problems and doing the lecture examples, I am doing the extra problems from the lecture book and the review problems that were uploaded on Brightspace.

  3. I was trying to practice with the past exam and review problems that were posted on Brightspace, but I couldn't seem to find the answers to the review and past exam. Where can I find the answer key?

  4. Does anyone know if we will be able to use our notes, or is it a closed-note exam? Since it is being proctored I am guessing no notes/extra materials allowed but I just wanted to check.

  5. Can someone explain why the x centroid is 1/6 meters for fall 2014 exam 1 question 1c?
    It doesn't make sense to me because the entire length of the shape is 10m and 1/6 is not a reasonable answer

    1. Hey Sihun,
      That value is correct because it's relative to the coordinate system. So x = 1/6 is actually around the middle of the shape from left to right, it falls in the hole area just to the right of the y-axis. Hope this helps!

  6. I would recommend you guys to go through the hw solution problems when studying for the exam. That has really helped me refresh my memory on some of the concepts and make sure I have a good understanding of everything!

    1. I don't remember seeing any specific information on what types joints/bearings we need to know for the test, but I've just been looking over the most common ones. Like the ball and socket, hinge, and fixed supports.

  7. When we're drawing FBD's for say three cables attached to a ring at a point, do we need to include the distances from the origin to the different points? Like for a cable Tac, do I need to write the dimensions for point C in the FBD?

    1. There should be examples in the lecture book! In general for a FBD you have to make sure to include all forces and couples, the coordinate system, and any important measurements to get full credit.

  8. Are we going to be able to print out a version of the test with all of the information (ex. the visuals on which the FBDs will be drawn) to make it a bit easier to keep track of information? Or do we need to use the blank template while the full version is pulled up on our computer?

  9. Will rounding errors be accounted for on the exam? I have been getting answers close but a few units off due to rounding errors and just wanted to make sure I did not need to write down 5+ decimals when solving a problem.

    1. Hey Matthew, Prof Krousgrill mentioned that rounding errors will not be accounted for on the exam. He mentioned that if your answer and the answer they are expecting are similar (i.e decimals being left off) you will receive full credit.

  10. Can anyone explain why resultant forces are sometimes negative or sometimes positive? I can see how you could possibly get both based on what side of the equation you put Ax on. Can anyone clear this up for me please?

  11. Does anyone know if I would be allowed to pull up the exam PDF on my desktop computer while on a zoom call with my laptop? Because it will be difficult to read the PDF off my laptop with it facing towards my paper.

  12. Could someone explain why, in Fall 2017, problem 2D, the raction moment remains the same when the applied couple at B was shifted towards C? I interpreted "applied couple" to be the forces, at that location and the moment. If it was just the moment given shifted, I would undestand no change, but if it is both the moment and the force of the extruding bar, as the distance from A increased, the total moment should increase in the negative direction by M=rxF, r is increasing. Thanks!

  13. Does anyone know how to submit a regrade request, I didn't see it on a syllabus, and my first thought is simply to email my professor. Thanks,

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