Two skaters, one with mass 62 kg and the other with mass 45 kg, stand on an ice rink holding a pole of length 10 m and negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far does the 45 kg skater move?

1 answer

They meet at the center of mass, which does not move.

Measured from the original 45 kg skater location, the CM is 620/107 = 5.79 m away.

That is how far that skater moves.