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captinkareem1
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Homework Statement
The books answer is "D", no clue why though, Any one can explain?
Thank you
Which equation is correct about the forces
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SUMMARY
The correct equation regarding the forces in the discussed problem is \(\displaystyle 15 = F\tan \theta\). The initial assumption that the book's answer "D" was correct was proven incorrect upon further analysis. The missing normal force "N" was also noted as a critical component in the equation. The discussion highlights the importance of verifying calculations and understanding the relationships between forces in physics problems.
PREREQUISITES- Understanding of basic physics concepts, particularly forces and angles.
- Familiarity with trigonometric functions, specifically tangent.
- Ability to analyze vector components in force diagrams.
- Knowledge of how to set up equations based on physical principles.
- Study the derivation of force equations in physics, focusing on trigonometric relationships.
- Learn how to construct and analyze free-body diagrams for various scenarios.
- Explore the application of Newton's laws in solving force-related problems.
- Review the concepts of normal force and its role in equilibrium problems.
Students studying physics, educators teaching force dynamics, and anyone preparing for exams involving mechanics and vector analysis.
The books answer is "D", no clue why though, Any one can explain?
Thank you
- #2
mfb
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[strike]If you add those 15N and F, the resulting force has to have the same angle theta relative to the horizontal axis. If you draw a triangle there, you directly get the relation.[/strike]
Edit: Oh crap, Curious3141 is right. I did not check the result, just saw that you get the tan there.
And strictly speaking, there is a "N" missing as well.
Edit: Oh crap, Curious3141 is right. I did not check the result, just saw that you get the tan there.
And strictly speaking, there is a "N" missing as well.
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Curious3141
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captinkareem1 said:Homework Statement
The books answer is "D", no clue why though, Any one can explain?
Thank you
All the given options are wrong. The correct answer is ##\displaystyle 15 = F\tan \theta##, which is not one of the given options, even though "D" is closest.
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