Recent content by CVRIV

I figured out what I did wrong. I was using a mass of 5kg instead of 0.5kg. The crazy thing is that I acquired the correct value for part A using the wrong amount of mass! What happened was I didn't square the x variable so with those two mistakes, I got the right answer. Ha ha. Thanks for...

Hello everyone:) I'm having an issue with an example problem in the book I'm using. I attached a pic of the problem and the book's solution. The issue I'm having is that I have no idea how the book got the velocity it did via the solution it presented. When I worked out the problem myself...

Finally! The problem was that from the very start I was inverting the polarity of m1a2. I kept writing down T - m2g = -m2a2. I did that because I had it in my head that a2 was negative, which it is, but only after solving for a2. By assigning it as negative from the start, I was in fact just...

Oh wow. I think I know what I did wrong. How stupid of me. :confused:

Why would positive a2 accelerate downwards? I thought positive a2 accelerates upwards? In equation 2 I divided both sides by -1 so that I could cancel out the tension T. Was that not right?

I attached an image of the problem and solution from the book and my attempt at solving it. I don't need help solving the problem the way the book explains it; i understand that. What I don't understand is why I can't solve for (a2) instead of (a1). The book says a2 = -a1, which makes sense to...

Finally! Oh my god! I'm suppose to know how to do this! Sad. Firstly, I remember solving for two unknowns in Algebra. It came back to me when I read what haruspex said. The next mistake I made was that I didnt make each expression equal to each other. I was substituting one inside the other. I...

This is my best effort. I had a little more help from another forum but don't fully understand how that person got what they got. I just done get it.

I give up. I tried the law of cosines and still got it wrong. I didn't even want to use the law of cosines. I wanted to solve it without using LOC. I'm super frustrated. I need to walk away from this. I really need to move on to new stuff. I'm already behind.

I don't have any work for this problem saved because the work I've done so far was by no means worth saving. I think I figured out what I'm doing wrong though. I was assuming that the boat is traveling across the river at an angle of 90deg; this is why I kept drawing a right triangle to...

I edited my original post to be more easily understood.

Thanks:)

I attached an image with problem and the associated illustration. I don't know what the relevant equations are for this problem. Each and every time I read the problem I keep drawing a right triangle to represent the velocity components. The problem says the river is flowing east at 5km/h. I...

Hello everyone. My name is Charles.