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!

Vector question on component subscripts

  1. Aug 28, 2009 #1
    What does A1mean? This A1 component does not even have a X subscript.

    Then there's A1x and resultant R2.

    Can anyone give an example on how to interpret and graph both vector components & resultant from a problem?

    Thanks in advance.
    Last edited: Aug 28, 2009
  2. jcsd
  3. Aug 28, 2009 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    Do you have a specific question, or context, in which you've seen this?
  4. Aug 28, 2009 #3
    It's lab, but I haven't seen this in the book.

    1 Mount a pulley at the 20 degree mark on the force table and suspend a mass of 100 grams over it. This gives a force A1. Next, mount a second pulley at the 120 mark and suspend amass of 200 grows over it, giving a force A2.

    a. Calculate the magnitudes of these forces, their representive langhts, and their components. Record these calculations in table 1.

    b.Draw a vector diagram for A1 & A2 with their lengths represented in centimeters. Use the parallelogram method to add these vectors geometrically to get the resultant vector R1=A2 + A2.
  5. Aug 28, 2009 #4


    User Avatar
    Staff Emeritus
    Science Advisor

    Oh, ok, well the subscript doesn't mean anything too special there. You could just call the forces A and B, with resultant R. The subscript in that case is just a label.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Vector question component Date
Vector components question? Jul 31, 2014
Vector components question Sep 25, 2013
Vector component question Feb 5, 2013
Kinematics question projectiles with vector components (baseball player Q) Mar 27, 2012
Vector component question Jan 26, 2012