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Welcome to PHY 121 Blog Help. Here's how it works. For each homework question and lab report we will make a post, this will probably contain a few tips on what the problems are about and how to solve them. If you are stuck on something then instead of emailing us directly you should post a comment in reply to the relevant post. We will try to guide you through tough points and help you understand the problems and the concepts behind them.
9 comments:
I can't seem to move the existing vectors to satisfy the "head to tail" rule. Any help would be greatly appreciated.
Yes, you cannot move the existing vectors, but you can make a new vector of the same magnitude and direction. If you click "Add Vector", you can choose the option "unlabeled vector". Click on the tail of the vector you wish to reproduce and drag the cursor to the head of the vector. Now you can move that vector as you like.
I first put a unlabeled vector next to and A and B to get the magnitude and the angle then calculated the appropriate angle for A-B and put a unlabeled to mark that specific angle and magnitude then put C right next to that unlabeled vector but seem to still be getting the answer wrong, I am confused in what i am doing doing wrong.
You draw B the opposite way, so where B's head is it should be the unlabeled vector's tail. Then you just connect the pieces.
i cant do anything here i dont understand how to move or create a new vector
can you move vectors A and B or are you supposed to work from where they are?
nevermind got it
This is beyond obnoxious - enough people are having problems with this stupid vector drawing program. I'd rather hand it in on a piece of paper.
Seriously, there needs to be a better explanation for how this is done.
ok so i made the vectors, i put them together (head-to-tail) and then i connected the ends together to form vector d/c...so why am i getting it wrong still? can someone help?
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