- #1
So j is up, negative j for second force?
- Thread starter phunphysics2
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Homework Help Overview
The discussion revolves around a physics problem involving forces and vector notation, specifically focusing on the direction of forces acting on a box that is accelerating to the right. The context includes the application of Newton's second law, F=ma, and the use of a standard xy coordinate system.
Discussion Character
- Exploratory, Assumption checking, Conceptual clarification
Approaches and Questions Raised
- Participants discuss the correctness of vector notation and the direction of forces. There is a focus on clarifying how the forces are represented in the xy plane and whether the original poster's understanding aligns with standard conventions.
Discussion Status
Some participants have provided feedback on the original poster's work, particularly regarding the direction of the forces and the clarity of their diagram. There is an ongoing exploration of how to properly express the forces in vector notation, with no explicit consensus reached yet.
Contextual Notes
The original poster mentions being a second-year English major taking a calculus-based engineering physics course, which may influence their approach to the problem. There is an indication of a need for clearer communication in their work to meet academic standards.
- #2
tiny-tim
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hi phunphysics2 ! 
your magnitude is correct, I'm not sure about your direction since i can't see which way you're measuring it
(but you need to write it out much better than this if you're going to pass an exam
)
(and i don't understand how you managed to draw a diagram of this without any arrows in it)
your magnitude is correct, I'm not sure about your direction since i can't see which way you're measuring it
(but you need to write it out much better than this if you're going to pass an exam
)(and i don't understand how you managed to draw a diagram of this without any arrows in it)
- #3
phunphysics2
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Thanks for your response
1. The box is accelerating COMPLETELY to the right. I did not draw in the arrow at 0 degrees but it is noted in the problem
2. I used the standard xy plane for this problem. Origin is in the middle of the box and the arrow Q rests along the 90 degree mark.
The box that I drew was given to us as a picture in the problem
Is the vector notation correct?p.s. I am a 2nd year English major taking calc-engineering physics. Scored 5% higher than the average in class, which was a passing grade
1. The box is accelerating COMPLETELY to the right. I did not draw in the arrow at 0 degrees but it is noted in the problem
2. I used the standard xy plane for this problem. Origin is in the middle of the box and the arrow Q rests along the 90 degree mark.
The box that I drew was given to us as a picture in the problem
Is the vector notation correct?p.s. I am a 2nd year English major taking calc-engineering physics. Scored 5% higher than the average in class, which was a passing grade
- #4
tiny-tim
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hi phunphysics2!
so j is up
then your second force must have negative j
you can either write everything in a continuous string of maths,
or you can write it out as a piece of english
phunphysics2 said:
so j is up
then your second force must have negative j
p.s. I am a 2nd year English major taking calc-engineering physics. Scored 5% higher than the average in class, which was a passing grade
you can either write everything in a continuous string of maths,
or you can write it out as a piece of english
but not as a disjointed collage
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