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!

AP Physics HW Help - Motion of 2 Pendulums

Tags:
  1. Sep 4, 2013 #1
    AP Physics HW Help -- Motion of 2 Pendulums

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

    A system consists of two metal balls hanging by strings of length L fixed at a common point as shown. Pendulum A has a mass of 2kg and Pendulum B has a period of 2.0s.

    a. What is the length L of each pendulum?
    b. What is the maximum speed Pendulum A reaches after being released from a height of 0.6m above its equilibrium position (neglect friction)
    c. Pendulums A and B are released at the same time from the same height, colliding right in the middle of their arcs. If Pendulum A comes to a complete stop after the collision while Pendulum B moves backward with half of its original speed, what is the mass of Pendulum B>


    2. Relevant equations

    Period equations
    Kinetic Energy Maybe?
    Conservation of momentum


    3. The attempt at a solution

    For a. I used to formula Tp=2Pi(sqrrt of L/g)
    For b. I have no clue maybe use something with KE and PE
    For c. Conservation of momentum formula im thinking?


    HERE IS THE DIAGRAM:

    http://imgur.com/GK1ZvFf
     
    Last edited: Sep 4, 2013
  2. jcsd
  3. Sep 5, 2013 #2
    You have all the right ideas - just use them.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: AP Physics HW Help - Motion of 2 Pendulums
  1. Hw Help(2) (Replies: 1)

  2. 2 AP physics B questions (Replies: 15)

Loading...