Recent content by murphy

  1. M

    Calculating the Height of a Flowerpot in Free Fall: A Kinematics Problem

    Yes! Thank you very much. So in these problems, then, can you always assume that the time to go up = the time to come back down? (assuming an ideal free fall situation)
  2. M

    Calculating the Height of a Flowerpot in Free Fall: A Kinematics Problem

    The Drowsy Cat - Kinematics! Can anybody help me get started? I have been working on this problem forever... A drowsy cat spots a flowerpot that sails first up and then down past an open window. The pot is in view for a total of 0.50s and the top to bottom height of the window is 2.00m. How...
  3. M

    Conservation of Angular Momentum

    Thanks! I love this forum!
  4. M

    Conservation of Angular Momentum

    I have a physics problem that I think is not so hard but I just can't get the answer. There are two uniform circular disks that are rotating and attached by a string. there is no slip between the string and the disks. On the small disk is a hub that is attached like the first two to an even...
  5. M

    Another pulley problem, but on an incline

    Thank your so much! It finally makes sense!
  6. M

    Thermal Conductivity Units Conversion - Help Needed!

    Hi, i don't know if this helps, but there is a great website for thermal conversions. It is www.tak2000.com/thermalconv.htm or you could try calculator.org. I know that they definitely convert to W/m.C, but I'm not sure what your first units are.
  7. M

    Another pulley problem, but on an incline

    There is this question that I feel like it should be easy, but I can't get the right answer. There is a box sitting on a horizontal surface attached to another box that is sitting on a "decline" The horizontal box is bigger than the other one. a horizontal force is applied to the horizontal...
  8. M

    A different type of pulley question -help

    thanks! I got it! - I didn't realize that the man had double force pulling up on him!
  9. M

    A different type of pulley question -help

    Okay, I have this crazy pulley question where a guy is sitting in a box that is attached to a pulley on the ceiling (the pulley system is ideal). He pulls himself up at a constant velocity -how do i find the force needed for him to pull himself up? (the rope goes around the pulley and back...
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