- #1
Is this a mistake on the answer key? (Newton's Laws)
- Thread starter Lori
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- Laws Mistake Newton's laws
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Homework Help Overview
The discussion revolves around a problem related to Newton's Laws, specifically focusing on the angles involved in a force diagram. Participants are questioning the interpretation of angles in relation to the axes in the context of a physics problem.
Discussion Character
- Conceptual clarification, Assumption checking
Approaches and Questions Raised
- Participants are exploring the correct angle measurement in a force diagram, with some questioning whether the angle should be 60 degrees or 30 degrees. There is discussion about the reference axis from which the angle is measured.
Discussion Status
Some participants have provided clarifications regarding the angle measurements, indicating that the angle is measured from the y-axis. There is acknowledgment of confusion, but also agreement on the placement of the angles in the diagram.
Contextual Notes
Participants express frustration over the clarity of the problem, suggesting that the presentation of the angles may lead to misunderstandings. There is a mention of preparing for an upcoming physics exam, indicating a context of study and review.
- #2
NFuller
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Because the angle is being measured from the y-axis rather than the x-axis. The angle to the x-axis is ##30^{\circ}## and the angle to the y-axis is ##60^{\circ}##.Lori said:
- #3
Lori
Ahhhh nevermind, i think they used the 30 degrees as the angle of the force from top left... Man. these problems are very unclear .
- #4
CWatters
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Lori said:
No it's clear. The 30 degree angle on the drawing is in the correct place. P is at 30 degrees to the horizontal axis.
The vertical component of P is PCos60 or PSin30 as these are same thing.
The horizontal component of P is PSin60 or PCos30 as these are the same thing.
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- #5
CWatters
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Sorry if that was confusing, I agree with your solution.
- #6
Lori
No it's fine! Thanks for helping me out. I'm trying to prepare for my physics exam as much as I can! I think I really learned a lot from you guys :)CWatters said:
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