1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Find the final velocity of a metallic bar

  1. Dec 17, 2016 #1
    1. The problem statement, all variables and given/known data
    We have a ramp with some angle theta. The metallic bar sitting on a ramp at height h. Also, we have some weight that attached by a rope to a metallic bar while hanging on the height h. There is a magnetic field with a magnitude B and direction k.
    M = metallic bar
    m = weight
    height is the same for metallic bar and weight

    2. Relevant equations
    PE + KE = PE +KE
    F = q*v*B

    3. The attempt at a solution
    Mgh + mgh = 0.5MV^2 + mgh(1+1/sin/tetha)

    Solve for V.

    Then I am lost because the magnetic field does not do work. Hence the final velocity is not changing due to a presence of a magnetic field.
  2. jcsd
  3. Dec 17, 2016 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    This is going to require either a diagram or a far better description.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted