Uniform circular motion - plane in a circular arc

  1. 1. The problem statement, all variables and given/known data

    As a pilot comes out of a dive in a circular arc she experiences an upward acceleration of 9.0 gs (i.e. 9 x 9.8).

    a) Mentions that the Pilot's mass is 60 kg, already solved this

    b) If the speed of the plane is 330 km/h, what is the radius of the plane's arc?

    2. Relevant equations

    ac = v2/r
    Fnet = [tex]\Sigma[/tex]F

    3. The attempt at a solution

    No idea what to do because I can't figure out what is causing the centripetal acceleration.

    mv2/r = - mg

    I don't know the mass of the plane, and if I add another force which I assume would cause the centripetal acceleration then I have no way of calculating that either.
  2. jcsd
  3. rock.freak667

    rock.freak667 6,221
    Homework Helper

    The upward acceleration the pilot experiences is directed towards the center of rotation, so you are given the centripetal acceleration.
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