UKERUB!

So we were learning about the technique "UKERUB" which is opposite of the BUREKU technique. So instead of breaking up a diagonal vector into horizontal and vertical vectors, we instead tried to find the vertical based on x and y axis lines! When using this technique, we are given distances in a certain direction such as Northeast, South, etc. It is a three-step process starting with drawing a picture! This is very important because then you can see the actual route travelled and makes it so much easier to solve when you know which vector you are trying to find! Then we make a t-chart of the x and y vectors (the distances). Then we have to add all vector components at the bottom of our t-chart! Once we do that, we can use the "ukerub" technique. Then we use Pythagorean Theorem to find the hypotenuse travelled and our SOHCATOA (either sin theta or cosine theta) to find the actual angle travelled in the direction!

We also learned about Free Body Diagrams which are pictures that we use, then draw the force/tension/weight/friction/and any other forces in certain directions they pull. We do NOT draw the forces on the original drawings. This goes with what we learned about Newton's Second Law that Fnet=ma, so the sum of all forces is equal to the mass times acceleration giving them a direct relationship. So for example and object on a table would have its weight pull downwards and have Normal force pulling direction upwards with the same force.

This is a picture of my small living room chandelier. It's held on by a chain hanging from the top of the ceiling. It would be balanced and there would be Tension pulling upwards while weight would be pulling in the opposite direction but with the same force!