- #1
How does momentum conservation apply to a system with two interacting objects?
Click For Summary
Homework Help Overview
The discussion revolves around the application of momentum conservation in a system involving two interacting objects, specifically focusing on the forces and changes in momentum of each object during interaction.
Discussion Character
- Exploratory, Assumption checking, Conceptual clarification
Approaches and Questions Raised
- Participants discuss the relationship between force and momentum, questioning how to calculate the forces acting on each object based on their changes in momentum. There are attempts to clarify which object's momentum change should be considered for the calculations.
Discussion Status
The discussion is active with participants seeking clarification on the correct approach to find the forces acting on the objects. Some guidance has been provided regarding the distinction between the forces acting on each object and the changes in momentum they experience.
Contextual Notes
Participants are navigating the specifics of the problem, including the definitions of forces and momentum changes, as well as the implications of conservation laws in their calculations.
- #2
cnh1995
Homework Helper
Gold Member
- 3,489
- 1,163
Force is exerted "on" B. That will cause "change in momentum of B at some rate". Use force-momentum relationship and momentum-time relationship.
- #3
C0balt
- 7
- 0
well the resultant force is the change in momentum/time interval. So for part a, would I find the change in momentum for truck a?cnh1995 said:
- #4
cnh1995
Homework Helper
Gold Member
- 3,489
- 1,163
Rate of change of momentum of A will give you the force "acting on A" ,not the force exerted by A. You are asked to calculate the force "acting on B" which is exerted by A.
- #5
C0balt
- 7
- 0
Ah so I need to find the change in momentum of the blue line, B?cnh1995 said:
- #6
cnh1995
Homework Helper
Gold Member
- 3,489
- 1,163
For part a? Yes.C0balt said:
- #7
C0balt
- 7
- 0
Thank youcnh1995 said:
- #8
cnh1995
Homework Helper
Gold Member
- 3,489
- 1,163
After solving a and b, you'll see that the momentum lost by A is equal to the momentum gained by B. That's what is expected in part c. The total montemum of the system has been conserved.
Similar threads
- · Replies 2 ·
- · Replies 4 ·
- · Replies 17 ·
- · Replies 13 ·
- · Replies 5 ·
- · Replies 21 ·