Search results

  1. R

    Rotational/Tangential Motion Problem

    Oh nevermind, I'm sorry, admin you may delete this post, I figured it out.
  2. R

    Rotational/Tangential Motion Problem

    Homework Statement A flywheel with a radius of 0.300 m starts from rest and accelerates with a constant angular acceleration of 0.600 rad/s^2. a)Compute the magnitude of the tangential acceleration, the radial acceleration, and the resultant acceleration of a point on its rim at the...
  3. R

    Momentum/KE Problem

    Oh no... Looks like I have to use the quadratic formula for this... -.-'
  4. R

    Ultracentrifuge Problem

    Ah... dumb me... should've multiplied not divided by 60 -.-' Thank you again...
  5. R

    Ultracentrifuge Problem

    It seems like the approach is not working. So I first used Ac = V^2 / R and so first I did 400000 * 9.8 * .025 and square rooted the answer to get my Velocity then I divided it by .025 to get my omega which should be in rad/s right now, then I divided it by 2pi and divided it by 60 so that my...
  6. R

    Ultracentrifuge Problem

    Oh yea I was aware I had to do unit conversion, but thanks for bringing that up, and thank you for your help Hoot and berk.
  7. R

    Momentum/KE Problem

    Ah... Ok, I guess I have to do some kind of substitution.
  8. R

    Ultracentrifuge Problem

    I'm not sure but do I have to use Ac = V^2 / R ? Then, after solving for velocity, I would have to convert it to omega? w = V/R ?
  9. R

    Momentum/KE Problem

    I used the conservation of momentum equation, M neutron * Vi,n = M neutron * Vf,n + M boron * Vf,b Then I would use the KE equation .5(M neutron)(Vi,n)^2 = .5(M neutron)(Vf,n)^2 + .5(M boron)(Vf,b)^2 However, I realized that I would be messing with two unknowns and I have no idea how to...
  10. R

    Ultracentrifuge Problem

    Oh sorry I put this in the wrong subforum.
  11. R

    Ultracentrifuge Problem

    [SOLVED] Ultracentrifuge Problem Find the required angular speed (in rpm) of an ultracentrifuge for the radial acceleration of a point .0250 m from the axis to equal 400000g. g=9.8 m/s^2.
  12. R

    Momentum/KE Problem

    A neutron with a mass of 1.67×10^−27 kg and moving with a speed of 45000 m/s makes a head-on collision with a boron nucleus with a mass of 1.66×10^−26 kg. The boron nucleus is originally at rest. If the collision is perfectly elastic, what fraction of the neutron's original kinetic energy is...
Top