1. Not finding help here? Sign up for a free 30min 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!

Comparing two methods of finding muzzle velocity?

  1. Jun 12, 2013 #1
    1. The problem statement, all variables and given/known data
    In this lab we used a ballistic pendulum to find velocity.

    They gave us the equation (below) to find the velocity of the ball that we shot and want to know if there's another way of finding muzzle velocity. I thought of using the Conservation of Momentum/Energy formula but I'm not getting similar results.

    θ=25
    M=4.5kg
    m=.7kg
    Rcm=.3m


    2. Relevant equations

    v= M/m * radical(2gRcm(1-cosθ))


    3. The attempt at a solution
    I'm getting something like 2.5 or so while the conservation equations lead to a decimal.



    I figured it out. I didn't take into account the nonconservative forces.
     
    Last edited: Jun 12, 2013
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Comparing two methods of finding muzzle velocity?
  1. Finding Final Velocity (Replies: 0)

Loading...