Solving Forces: Balancing Force with -43.6°

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The discussion revolves around solving a physics problem involving forces, specifically balancing a force with an angle of -43.6°. The user calculated a force from a conveyor as +1.962N and set up an equation to balance forces, leading to confusion about the negative angle. A key point raised is the omission of a normal force in the free body diagram, which is crucial for accurate calculations. The user acknowledges this oversight and thanks the contributor for the assistance. Understanding the role of the normal force is essential for resolving the problem correctly.
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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?
 
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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
 
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