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!

Centre Of Mass

  1. Nov 16, 2005 #1
    Ricardoof mass 80Kg, and Carmelita, who is lighter, are enjoying Lake Merced at dusk in a 30Kg canoe. When the canoe is at rest in the placid water, they exchange seats, which are 3m apart and symmetrically located with respect to the canoe's centre. Ricardo notices that the canoe moves 40 cm relative to a submerged log during the exchange and calculates Carmelita's mass, which she has not told him. What is it?

    I'm guessing that I should first find The COM of the canoe with the people in it. How can I do this with an unknown second mass?
     
  2. jcsd
  3. Nov 17, 2005 #2

    dx

    User Avatar
    Homework Helper
    Gold Member

    Lets say the unknown mass is M. write the expression for the center of mass with this variable. Write the expression for the center of mass in the new position. You know that they will be in the same place.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Centre Of Mass
  1. Centre of Mass (Replies: 2)

  2. Centre of Mass (Replies: 1)

  3. Centre of Mass (Replies: 3)

  4. Centre Of Mass (Replies: 9)

  5. Centre of mass (Replies: 6)

Loading...