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!

Simple center of mass problem but i cant figure it out

  1. Mar 9, 2005 #1


    User Avatar

    I feel silly for ask you for help on this simple center of mass problem but i got wrong answers...

    Where is the center of mass of a uniform, L-shaped iron rod of sides X = 0.8 m and Y = 0.5 m, respectively? Take the corner to be at (x,y) = (0,0), with the X and Y sides along those axes, respectively. (Assume that the rod is so narrow that the dimensions of the outer bend are the same as those of the inner bend of the L.)

    i thought the answer is x = .2667m and y = .1667m perhaps my answers are wrong?
  2. jcsd
  3. Mar 9, 2005 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Now, the C.O.M of the horizontal leg is (0.4,0), for the vertical leg, (0,0.25)
    Let [tex]m_{h}=0.8\rho[/tex] be the mass of the horizontal leg, and [tex]m_{v}=0.5\rho[/tex] the mass of the vertical leg ([tex]\rho[/tex] being the density).
    Hence, the coordinates of the C.M of the L-shaped object fulfill:
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Simple center of mass problem but i cant figure it out
  1. I cant figur this out (Replies: 5)