Recent content by leejos16

  1. leejos16

    Finding Center of Mass on a Reaction Board Using Torque Principles

    Homework Statement A person's center of mass is easily found by having the person lie on a reaction board. A horizontal, 3.0-m-long, 6.6kg reaction board is supported only at the ends, with one end resting on a scale and the other on a pivot. A 63kg woman lies on the reaction board with her...
  2. leejos16

    Rollercoaster normal force question

    hmm then are you saying that my velocity is wrong then? Any suggesstions how to solve it then?
  3. leejos16

    Rollercoaster normal force question

    OK first I did 5.50rps*2*pi*9.5 to get velocity. Than I used it in the equation n=52kg(328m/s)^2/9.5 - (52*9.8) Is something wrong?
  4. leejos16

    Rollercoaster normal force question

    Homework Statement In an amusement park ride called The Roundup, passengers stand inside a 19.0m -diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane, as shown in the figure 1. Suppose the ring rotates once every 5.50s . If a rider's mass is...
  5. leejos16

    Can a Rope Held by Macho Man Stay Perfectly Horizontal with a Weight?

    Homework Statement In the figure professional wrestler Randy “Macho Man” Savage is suspending a 10 kg mass with a rope between his two hands. Is the strongest member of your team, or even the Macho Man, strong enough to keep a heavy mass stationary and the rope perfectly horizontal? Explain...
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