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Lab question regarding cylinders

  1. Sep 4, 2009 #1
    hi
    im trying to do a lab on rotational inertia of a hollow cylinder
    i plan to roll a hollow cylinder down an incline
    and see how the inner radius, outer radius, and mass affects the final translational velocity
    but i am not sure what i can use for the cylinder
    to sufficiently control and alter the variables

    does anyone have any ideas?
    thanks in advance
     
  2. jcsd
  3. Sep 4, 2009 #2

    Mark44

    Staff: Mentor

    Different sizes of pipe -- iron pipe, plastic pipe, and so on.
    Empty "tin" cans of various sizes with the ends cut off.
    Surely you can think of more...
     
  4. Sep 4, 2009 #3

    kuruman

    User Avatar
    Homework Helper
    Gold Member

    Try two identical cans of mushroom soup, one at room temperature and one left in the freezer overnight.
     
  5. Sep 4, 2009 #4
    An easy way to control other variables such as density might be to use a cylinder in which you can drill holes of different sizes.A broomstick and a candle come to mind.You can get candles of very large radii.
     
  6. Sep 4, 2009 #5
    Only if it's Campbells mushroom soup:biggrin:
     
  7. Sep 4, 2009 #6
    pipes are a bad idea because i would need at least 15 data different data values and i cant really slowly increase or reduce the radius
    i also need uniform density so i cant use different types of pipes

    freezing a can would also just give 2 data values which would not be enough

    i think thats a great idea and its worth a try

    but does anyone kno anything kind of like tissue or tape
    that i can constantly wrap around to increase the radius?
    it would be great if its much thicker than tissue because tissue would take forever to increase the radius

    thanks in advance
     
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