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A big yo-yo(radius .2m, mass 20kg) has a string wrapped about its circumference. If yo-yo falls, how far does it fall in 2 seconds? (The yo-yo is shaped like a disk)

  • physics -

    Gravity is working on it.


    assume the yoyo is a disk for getting the moment of inertia.
    solve for w.

    But w=v*radius
    and average velocity then is w/2r
    distance fell then is w/2r * time

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