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ilikephysics2 Group Title

a Ferris wheel that rotates five times each minute. It carries each car around a circle of diameter 18.0 m. What force (magnitude and direction) does the seat exert on a 53.0-kg child when the rider is halfway between top and bottom?

  • 2 years ago
  • 2 years ago

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  1. Miyuru Group Title
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    This question would be more suited in physics section.

    • 2 years ago
  2. ilikephysics2 Group Title
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    yeah but they hardly ever have physics people on here

    • 2 years ago
  3. theredhead1617 Group Title
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    Haha

    • 2 years ago
  4. Miyuru Group Title
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    |dw:1349189537433:dw|

    • 2 years ago
  5. ilikephysics2 Group Title
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    yes he can be anywhere it doesn't matter..

    • 2 years ago
  6. ilikephysics2 Group Title
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    it says in the question 5 times each minute

    • 2 years ago
  7. ilikephysics2 Group Title
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    i dont know where to start on this one

    • 2 years ago
  8. CliffSedge Group Title
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    "..when the rider is halfway between top and bottom?" |dw:1349189927715:dw|

    • 2 years ago
  9. ilikephysics2 Group Title
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    ok

    • 2 years ago
  10. CliffSedge Group Title
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    The resultant is the vector sum of the child's weight (up) and the centripetal force (towards center)

    • 2 years ago
  11. ilikephysics2 Group Title
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    ok

    • 2 years ago
  12. ilikephysics2 Group Title
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    and thats for start

    • 2 years ago
  13. CliffSedge Group Title
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    Can you convert that 5rpm into a linear speed, or at least an angular velocity in radians per second?

    • 2 years ago
  14. ilikephysics2 Group Title
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    5/60?

    • 2 years ago
  15. Miyuru Group Title
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    nope

    • 2 years ago
  16. CliffSedge Group Title
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    That will give you revolutions per second, but you need to convert revolutions to something useful like radians or meters.

    • 2 years ago
  17. ilikephysics2 Group Title
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    can you do it?

    • 2 years ago
  18. CliffSedge Group Title
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    Yes, it's a pretty easy operation, but I think you'll get more satisfaction if you try it yourself.

    • 2 years ago
  19. ilikephysics2 Group Title
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    I already did try, i couldn't do it

    • 2 years ago
  20. Miyuru Group Title
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    Would it be 90m/s

    • 2 years ago
  21. ilikephysics2 Group Title
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    no idea?

    • 2 years ago
  22. Miyuru Group Title
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    May be the answer would be, 5300N clockwise

    • 2 years ago
  23. Miyuru Group Title
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    Try posting this in the physics section. Surely you would get an answer.

    • 2 years ago
  24. ilikephysics2 Group Title
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    how did you get that

    • 2 years ago
  25. Miyuru Group Title
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    A mistake it would be 530N Well, the weight of the child is 53 kg gravitational acceleration appro. 10m/s2 then force= mass * acceleration = 53kg* 10m/s2 = 530kg/s2 = 530N

    • 2 years ago
  26. ilikephysics2 Group Title
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    i think thats wrong

    • 2 years ago
  27. CliffSedge Group Title
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    5rpm means 5 times 2π radians per minute. Divide by 60 to get radians/second. Multiply that by the radius of 9m to get linear speed. centripetal acceleration (just like in the last problem you did) is v^2/r.

    • 2 years ago
  28. ilikephysics2 Group Title
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    i need to get going in about 10 minutes can you show me the steps and what the answer is so i can have a better understanding @CliffSedge

    • 2 years ago
  29. ilikephysics2 Group Title
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    i got 4.71 after i multiplied it by 9

    • 2 years ago
  30. CliffSedge Group Title
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    Ok, that will be your linear speed. Square that and divide by the radius to get centripetal acceleration. Mass times acceleration will give you force. Use mg to find the weight force. The resultant is the vector sum of those two forces. If you don't know how to find resultant vectors, then please go back to your book and study.

    • 2 years ago
  31. ilikephysics2 Group Title
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    so 388.76? is this correct, i only have 1 attempt left?

    • 2 years ago
  32. ilikephysics2 Group Title
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    ?

    • 2 years ago
  33. CliffSedge Group Title
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    You need magnitude and direction. What is the direction of the force vector?

    • 2 years ago
  34. CliffSedge Group Title
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    How did you get 388.76? What are the units of that number?

    • 2 years ago
  35. CliffSedge Group Title
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    Did you get 2.467 m/s^2 for the centripetal acceleration?

    • 2 years ago
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