Recent content by Homakruz

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    Pulley and Work Energy problems

    I see the error in my assumption now. I totally forgot about the angle factor for the normal force. I assumed you were using the cos() factor for the direction of which the force of the kinetic friction was working against the sled. Your explanations have clear a lot of things up. Thanks...
  2. H

    Pulley and Work Energy problems

    I see what I did now on one, I just reread my book and I think I got it mixed up with a different explanation. Here's the image for 2, it's a little simple but, the best I can do with paint. http://img682.imageshack.us/img682/5121/pullypic.png And for 3, I can understand the work done by...
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    Pulley and Work Energy problems

    Problem #4: This one is giving me the most trouble of all of them. I have no idea on how to solve it the correct way as my book is a bit obscure on these problems. A boy pushes a 12 kg sled up a 37 degree slope that is 2m high and has a kinetic friction value of .12. He pushes with a power of...
  4. H

    Pulley and Work Energy problems

    Well, I took a Physics midterm this morning, I had a bit of trouble with a few of the questions and was hoping I could get some help here. I did what I thought to be right, but as I really only started picking up physics concepts just recently, I am a bit weary on if I actually computed them...
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