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: [Math Verification] Massless Pulley - Acceleration of blocks A & B?

  1. Jul 25, 2012 #1
    1. The problem statement, all variables and given/known data

    http://img152.imageshack.us/img152/8286/imag0103l.jpg [Broken]

    *I'm aware my free body diagram is off and that normal force should be in the left quadrant.
    2. Relevant equations

    F=m*a


    3. The attempt at a solution

    Would I be correct in saying..

    Fg of A = mg * sin (20)
    = 2kg * 9.8 * sin (20)
    =17.9N

    Fg of B= mg
    = (3 kg) (9.8 m/s^2)
    =29.4N

    Fnet = 29.4N - 17.9N = 11.5 N (tension of massless rope)
    F= m*a
    a= F/m
    a of (A) = 11.5/2 = 5.75 m/s^2
    a of (B) = 11.5/3 = 3.83 m/s^2
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

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



Loading...
Similar Threads for Math Verification Massless Date
What is the necessary and sufficient condition? Apr 5, 2018
Prove that 0.999... = 1 is a contradiction Feb 11, 2018
Who lags behind whom? Feb 5, 2018
How to solve this addition? Jan 7, 2018
Simple Proof (Verification) Sep 3, 2013