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Homework Help: Can anyone see if this is ok

  1. Oct 27, 2007 #1
    1. The problem statement, all variables and given/known data

    Considerer one sphere of conducting material without mass in rotation with constant angular velocity in turn of the axis of the center of the sphere with angular momentum hbar/2. the sphere is charged with electric charge e. the mass equivalent energy of the sphere is equal to the potential electric of sphere.
    what is the mass of the sphere and the perimet velocity of the sphere

    2. Relevant equations

    V=q/4pie0r L=hbar/2 L=mvr E=mvsq2/2

    3. The attempt at a solution


    V=E, mvsq2/2=e/4pieor hbarvsq2/4vr=e/4pieor v=e/pie0

    hbar/2=mvr m=hbar/2vr m=hbarpie0/2er
    Last edited: Oct 27, 2007
  2. jcsd
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