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B Is centripetal force greater than centrifugal force?

  1. Nov 9, 2016 #1
    Why is resultant force directed towards the center of the circular path? Is it because centripetal force is greater than centrifugal force?
    If the centrifugal force is greater, then the ball will rise? (If the string doesn't snap)
  2. jcsd
  3. Nov 9, 2016 #2

    Doc Al

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    Staff: Mentor

    The mass is accelerating towards the center, so the net force had better be towards the center.

    Centrifugal force is a 'fictitious' inertial force that only appears when viewing things from a rotating frame. I suggest forgetting about it until you need to deal with such frames.
  4. Nov 9, 2016 #3


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    2017 Award

    Staff: Mentor

    If that would be the case, the pendulum would not move in a circle.

    Where else do you expect the resultant force to point to? Especially if you know that it moves in a circle?

    Centrifugal force is a fictitious force in a rotating coordinate system. It depends only on the coordinate system, so it cannot magically increase.
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