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Acceleration on a corner

  1. Mar 20, 2008 #1
    What i am wondering if driving in a circle if the mass of the object moving, why is it drawn outward because the current acceleration is in forward motion?
  2. jcsd
  3. Mar 20, 2008 #2

    Doc Al

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    Staff: Mentor

    When you drive in a circle, there will be a component of acceleration towards the center of the circle (otherwise you'd keep going in a straight line). Remember that acceleration doesn't just mean a change in speed--a change in direction is also an acceleration.

    From inside the car it feels like you are being pulled outward, just like it feels like you are being pushed backwards when you floor the gas pedal.
  4. Mar 21, 2008 #3
    Well it isn't drawn outward at all. Everything inside the car is just trying to move in a dead straight line. Objects dont like to go in circles at all, they like straight lines.
    It's the first law of mechanics, a very simple fact, beautiful, and first noticed by guys like Galileo 500 years ago.

    Watching a car from the pavement: the passengers always look like they just want to go straight rather than be carried with the car into the corner.

    If a motorcyclist falls off his bike in mid-corner, he moves in a dead straight line into the sand trap. He certainly doesn't move outward.

    So, it's not trying to move outward at all, what it's really trying to do is move in a perfect straight line whilst the car is moving inward.
    Last edited: Mar 21, 2008
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