Recent content by MarkChoo

  1. M

    Rotational motion begining with kinetic friction.

    yea I've tried a force diagram. ive also tried F = ma and since Ff = n u nu=ma then a = nu/m
  2. M

    Rotational motion begining with kinetic friction.

    how about if i use Wf=alpha(t) + Wo and plug into my alpha to get... t= 2rWf/5gu then plug time t it into Vf= at + Vo then I solve for a?
  3. M

    Rotational motion begining with kinetic friction.

    im lost then how to get the linear acceleration, because that was the only way I saw how to get alpha(a rad/s^2 value) in terms of a m/s^2 value. If that's what they mean by linear.
  4. M

    Not your avg engineering vs. math question

    take out a loan, money should not be an issue, consider it an investment.
  5. M

    Rotational motion begining with kinetic friction.

    Homework Statement A ball is suddenly kicked across a floor. It initial will have a linear velocity, but no initial angular velocity. The object will slide for a distance "d" until perfect rolling kicks in. all are in terms of variables and not specific numbers A.) derive an equation...
  6. M

    Sun vs. moon - affects on tides.

    In class today, we calculated that the amount of gravity between the sun and the Earth is 180. This is far greater than the amount of gravity beteen the Earth and the moon. So why does the moon affect the tides rather than the sun. My take: the sun is much farther and has a broader pull...
  7. M

    Which way would the tricycle go?

    foto http://s76.photobucket.com/albums/j29/E_man777/?action=view&current=tricycle_l.jpg http://s76.photobucket.com/albums/j29/E_man777/?action=view&current=tricycle_l.jpg
  8. M

    Which way would the tricycle go?

    Hello! my first post here This is more of a conceptual question. Assume normal friction in this type of situation, when pulling on the specific pedal (shown in pic) what happens to the tricycle (move backwards, forwards?) Also assume the steering is locked. What are 4 concepts in physics...
Back
Top