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: Resultant displacment and magnitude

  1. Sep 12, 2009 #1
    1. The problem statement, all variables and given/known data
    A man pushes a mop across the floor causes the mop to undergo two displacements. The first has a magnitude of 235cm and makes an angle of 131⁰ with the positive x-axis.

    The resultant displacement has a magnitude of 215cm and is directed at an angle of 49⁰ to the positive x-axis.

    Find the magnitude of the second displacement. Answer in units of cm.

    2. Relevant equations



    3. The attempt at a solution

    Tried using the above equation and not getting the right answer.
    What am i doing wrong?
    I set
    B=X second displacement
  2. jcsd
  3. Sep 12, 2009 #2
    A+B=R implies B=R-A. Find the x and y components of R and A, then recall how to subtract two vectors when you know their components.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook