How Does the Position of the Man Change as He Walks to the Edge of the Boat?

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SUMMARY

The discussion focuses on the physics of a man walking to the edge of a boat and how his movement affects the boat's position due to the conservation of momentum. As the man walks to the right edge, the boat shifts in the opposite direction to maintain the center of mass, which remains stationary if external forces are negligible. The key takeaway is that the man's new position is not simply the distance across the boat, but also includes the boat's movement in response to his walking.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of center of mass concepts
  • Familiarity with internal and external forces
  • Basic principles of momentum conservation
NEXT STEPS
  • Study the principles of conservation of momentum in closed systems
  • Learn about the effects of internal and external forces on motion
  • Explore examples of center of mass in dynamic systems
  • Investigate the role of friction and drag in real-world scenarios
USEFUL FOR

Physics students, educators, and anyone interested in understanding the dynamics of motion in relation to boats and walking, particularly in the context of conservation laws.

mohabitar
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Ok this one is messing me up. I already got number one (1.28). The question now is:
After walking to the right edge of the boat, how far has the man moved form his original location (what is his new location)?

I thought it would just be simple-the distance across the boat. But apparently as the man moves, so does the boat. This is confusing me. How do I begin to solve this one?
 
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The centre of mass stays stationary if the resultant of the external forces is zero. Internal forces do not change the position of the CM. Interaction between the man and the boat is internal force, friction and drag between water and boat would be external forces but they are negligible according to the text.

ehild
 

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