Question

Physics 12 Static Equilibrium Question!




How to understand the position of the folcrum in static equilibrium?

Answer 1

Please explain thank you.

Answer 2

For a regularly-shaped object, the fulcrum is exactly at the mid-point or centre point of the object.
Given that your object is a straight line, then the fulcrum is at half its total length.

Answer 3

@Hoslos that is not always the case, you can use the folcrum to get rid of unknow forces, but where to use it I still do not understand.

For this situation my teacher said FN1, why?

Answer 4

FN1 is the fulcrum?
Is all the information given that picture only?

Answer 5

I think it honestly depends on the forces. If your fulcrum is in static equilibrium, then that means the moment on both sides of the fulcrum must be equal. That is,
\[\huge \sum M_L=\sum M_R\]

Answer 6

sorry guys, the picture is this, I can draw it , wait a sec please

Answer 7

take a screenshot and attach if psble