- #1
2 wires attached to another wire attached to a block
- Thread starter random124
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Homework Help Overview
The discussion revolves around the forces acting on a suspended object connected by multiple cords, specifically questioning the relationship between the weight of the object and the tension in one of the cords (referred to as cord C). Participants explore the implications of the object's state of motion and the forces involved.
Discussion Character
- Exploratory, Conceptual clarification, Assumption checking
Approaches and Questions Raised
- Participants discuss the forces acting on the suspended object and question whether it is accelerating. They consider the implications of a net force of zero and the role of multiple cords in the system. There are repeated calls for drawing a force diagram to clarify the situation.
Discussion Status
The discussion is active, with participants raising questions about the relationship between weight and tension. Some guidance has been offered regarding the forces acting on the suspended object and the nature of the net force, but there is no explicit consensus on the reasoning behind the equality of weight and tension.
Contextual Notes
Participants note that the suspended object is not accelerating and question how other cords affect the forces acting on it. There is an emphasis on understanding the direct forces acting on the suspended body and the implications of the system's configuration.
- #2
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Draw a force diagram
- #3
- 42,846
- 10,509
What forces act on the suspended object? Is the suspended object accelerating?random124 said:
The "relevant equations" item in the template is for standard equations, such as Newton’s laws, that would be relevant to the question. Which of those relates forces on a body to its acceleration?
- #4
random124
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- 1
the object has no acceleration its suspended.
- #5
- 19,378
- 15,615
Draw a force diagram
- #6
- 42,846
- 10,509
So what does that tell you about the net force acting on it?random124 said:
And what forces contribute to that total?
- #7
random124
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That the net force is 0 but I don't understand why is the weight and tension of the cord that's pushing the weight up equal if there are other cords attached
- #8
- 42,846
- 10,509
The other cords are not attached to the weight.random124 said:
Each body only "knows" about the forces that act directly on it. The suspended body is only directly acted on by gravity and the vertical cord; that cord (taken as massless) is only acted upon by the suspended weight and the knot; the knot is acted on by three cords; etc.
If the knot were directly attached to a ceiling instead of to the upper two cords it would make no difference to anything below the knot.
- #9
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- 15,615
DO A FORCE DIAGRAM !!!random124 said:
- #10
Lnewqban
Homework Helper
Gold Member
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Welcome!random124 said:
When your fingers are holding a suspended bad of groceries, do they feel increased or reduced weight of the groceries?
The handles of the bag are also supporting as much weight as your fingers.
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