- #1
Andrei0408
- 50
- 8
- Homework Statement
- Andy (80kg) and Ben (120kg) are in a rowboat (60kg) on a calm lake. Ben is near the bow of the boat and Andy is at the stern at 2m from Ben. How far does the boat move as they change the places? Neglect any horizontal force exerted by the water.
- Relevant Equations
- Centre of mass position vector = (m1*r1+m2*r2+...+mi*ri)/m1+m2+...+mi
If I calculate the cm pos vector using the two boys' masses, I get 2m, which is the distance between them, but I don't know how to find the boat's displacement when they switch places. How do I represent the fact that they switch places? In what form?