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Center of mass of a boat

  • Thread starter Chuck 86
  • Start date
  • #1
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Homework Statement


Romeo (80.3 kg) entertains Juliet (58.0 kg) by playing his guitar from the rear of their boat at rest in still water, 2.73 m away from Juliet who is in the front of the boat. After the serenade, Juliet carefully moves to the rear of the boat (away from shore) to plant a kiss on Romeo's cheek. How far does the 80.5 kg boat move toward the shore it is facing?


Homework Equations



Xcm=m1x1+m2x2+m3x3
m1+m2+m3


The Attempt at a Solution


i dont really know what im doing on this problem because the professor didnt explain very well...at all
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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Hi Chuck 86! :smile:

There are no (horizontal) external forces on the boat-and-Romeo-and-Juliet, so its centre of mass will stay in the same place! :wink:
 

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