Engineering Find the support reactions on a beam

AI Thread Summary
The discussion focuses on determining support reactions for a beam, with the original poster expressing confusion over differing results from their calculations and those provided by their teacher. They believe their answer aligns with the SkyCivbeam software, but there is a disagreement regarding the interpretation of a 150 N force and its associated moment. Participants clarify that the moment should be correctly understood as 150 Nm and caution against multiplying it by a distance, which would alter the units. The conversation emphasizes the importance of correctly interpreting input values in calculations to maintain static equilibrium. Accurate understanding of moments and forces is crucial for resolving the discrepancies in the support reactions.
Noob of the Maths
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Homework Statement
Find the support reactions on beam.
Relevant Equations
Sum of moments
Hello! in this good afternoon ;).

I need some help for this beam and his support reactions.

The problem it is done, but my result its different from the teacher`s result.

I'm sure my answer is correct, as even the "SkyCivbeam" online software also gives the same results.

it appears that the problem lies in the momentum that accompanies the 150 N force...but i don't know..
Captura de Pantalla 2021-09-21 a la(s) 20.46.47.png


Thanks for read!
 
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The concentrated moment should be not 150, but 150 N x 1.5 m.
 
Lnewqban said:
The concentrated moment should be not 150, but 150 N x 1.5 m.
Nope. Note that the moment is given as 150Nm (the yellow is kind of hard to read). Multiplying it by a length again will mess up your units.
 
willem2 said:
Nope. Note that the moment is given as 150Nm (the yellow is kind of hard to read). Multiplying it by a length again will mess up your units.
Please, note that the yellow color shows the incorrect input value into the online calculator.
If the reaction moment at the point of connection between the beam and the L-shape lever is 150 N-m, that lever can't remain in static equilibrium respect to the beam.
Please see original problem shown by hand drawn diagram on top left corner of OP.
 

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