Solving Forces: Balancing Force with -43.6°

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Homework Help Overview

The discussion revolves around a problem involving forces, specifically balancing forces in a scenario related to a conveyor system. The original poster attempts to solve for an angle based on a force calculation and expresses confusion regarding the negative sign in their result.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster calculates a force and sets up an equation to balance forces, leading to a specific angle. They question the implications of obtaining a negative angle in their result.

Discussion Status

Some participants have pointed out potential omissions in the original poster's free body diagram, specifically the absence of a normal force from the belt. This feedback may guide the original poster to reconsider their approach and assumptions.

Contextual Notes

The original poster's confusion about the negative angle suggests a need for further clarification on the conventions used in their calculations and the physical interpretation of their results.

mchei
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Homework Statement



RZiwx.png


The Attempt at a Solution


define RHS as +ve
in a part, i have calculared that force by conveyor is +1.962N

in b part,
Aer7X.png

then, to balance force, 4.91sin@+1.962=1.962cos@ => @=-43.6'
i an confused about the negative sign... what is my problem?
 
Physics news on Phys.org
Your free body diagram is missing a normal force due to the belt
 
JaWiB said:
Your free body diagram is missing a normal force due to the belt

that's true, thx
 
help =[
 

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