What is the upward force exerted on the board by the support?

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Homework Help Overview

The problem involves a uniform board supported at its midpoint with two children standing on it, requiring the calculation of the upward force exerted by the support. The context is centered around forces and equilibrium in a physics setting.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relationship between the forces acting on the board and the support, questioning the simplicity of the solution and the assumptions involved in balancing forces.

Discussion Status

The discussion has seen participants exploring the concept of equal and opposite forces, with some expressing surprise at the simplicity of the solution. There appears to be a productive exchange regarding the understanding of forces in equilibrium.

Contextual Notes

Participants are grappling with the initial confusion regarding the setup and the application of fundamental physics principles, particularly in relation to the weights involved and their contributions to the forces acting on the support.

alfredo24pr
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Homework Statement



A long uniform board weighs 62.6 N (12.5 lbs) rests on a support at its mid point. Two children weighing 317.0 N (63.4 lbs) and 500.0 N (100.0 lbs) stand on the board so that the board is balanced. What is the upward force exerted on the board by the support?

Homework Equations



F=ma

The Attempt at a Solution



I do not know even where to start. This is confusing
 
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Is there a reason why you wouldn't believe the equal and opposite force on the fulcrum wouldn't be the force of the sum of the weights (including the board)?
 


AC130Nav said:
Is there a reason why you wouldn't believe the equal and opposite force on the fulcrum wouldn't be the force of the sum of the weights (including the board)?

lol! Is it really that simple?
 


alfredo24pr said:
lol! Is it really that simple?

yes it was the sum! I did not believe it was that simple. Thanks!
 

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