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

[alfredo24pr]

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

 

[AC130Nav]

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)?

 

[alfredo24pr]

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]

lol! Is it really that simple?

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