Finding Other Force in 2-Force Problem

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Homework Help Overview

The problem involves two forces acting on a mass of 3.1 kg, resulting in a specific acceleration. One of the forces is given, and the task is to determine the other force while visualizing the vector components involved.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the visualization of vector forces and their components, questioning how to transition between quadrants in a vector diagram. There is also a focus on understanding the definition of the total force vector derived from mass and acceleration.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some have suggested creating a sketch to aid in visualization, while others are clarifying the relationship between the forces and the total force vector.

Contextual Notes

Participants express difficulty in visualizing the forces and their respective quadrants, indicating a potential gap in understanding vector addition and representation.

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Other Force problem !

Homework Statement



Two forces act on a 3.1 kg mass, which undergoes acceleration a = 0.88 i - 0.28 j m/s2. If one of the forces is F1 = - 1.5 i - 3.0 j N, what is the other force?

Homework Equations


I don't know how to visualize this !


The Attempt at a Solution



I know two component add to Force but I can't visualize. I know vectors as :
F2 = ( 0.88 i - 0.28 j) * 3.1 which is 4th quadrant and F1 will be 3rd quadrant but how i can visualize it !
 
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yep. One force is a vector which goes to the third quandrant, and the total vector is in the fourth quadrant. So how to get from the third quadrant to the fourth quadrant? maybe it is simpler than you are thinking.
 
Ok how do you know that's total vector ?
 
well, you got it by multiplying mass times acceleration, so by definition, that is the total force vector.
 
Cause... that's where i was gettin tricked.
 
Well, did you try making a sketch?
 

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