Calculus Homework Check (vectors/forces)

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Homework Help Overview

The discussion revolves around a calculus problem involving vectors and forces, specifically focusing on the application of gravitational force and the use of trigonometric functions to analyze load distribution between supports.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants are examining the calculation of gravitational force and questioning the units involved. There is also a discussion about the reasoning behind using trigonometric functions for load distribution and the implications of different angles on the results.

Discussion Status

Some participants are providing feedback on the calculations presented, while others are seeking clarification on the reasoning and methods used. The conversation reflects a mix of attempts to validate approaches and explore the underlying concepts without reaching a definitive conclusion.

Contextual Notes

There are indications of confusion regarding the correct application of units and the implications of angle adjustments in the problem setup. Participants are encouraged to clarify their algebraic representations and reasoning processes.

samstim
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Homework Statement
Hey guys Im not sure if did my homework question corectly can someone please help me verify my answers.
Relevant Equations
Cosine Law
Sine Law
Forces
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In your first line you multiply 50kg/m2 by 9.8N to get 490N.
What are the correct units for g? What do you get if you multiply those units by kg/m2?

In the second line you use trig functions to apportion the load between the two supports. What is your reasoning for that? What answer would you have got if the angle were zero?

In future, please post algebra as typed in text. Images are for diagrams and textbook extracts.
 
Thank you
So for the first line would I do 50kg/m2 × 9.8 m/s2 = 490 N
For the second line I used horizontal components because my teacher said something about using them to solve the problem. If the angle was zero then the answer would be 490 N for each of the forces but I don't think that correct. Can you please explain the correct way to do question A
 
Last edited:
samstim said:
So for the first line would I do 50kg/m2 × 9.8 m/s2 = 490 N
No, ##kg/m^2\times m/s^2=N/m^2##.
What have you left out that has dimension m2?
 

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