- #1

mechanim

- 10

- 0

## Homework Statement

The body is connected to the ground with a moving joint at B, the body slides with no friction at A.

## Homework Equations

ΣF=0 => ΣFx=0 & ΣFy=0

ΣM=0

## The Attempt at a Solution

First I made a drawing:

At this point I started calculating:

ΣFx=>P-R2-F1, so: P=R2+F1

ΣFy=> R1+F2-mg=0, so: R1+F2=mg

I'm quite confused when it comes to the moment around B, I know that Moment=force*distance, but how do I draw all the distance that I need?

I thought about something like that:

So, the distance between F1 and the point B is a, while the distance between F2 and B is b.

Knowing this, I assume that the moment would look like that:

Mb: P+mg-F2*b-F1*a-R2-R1=0

now I replace P and mg according to the previous equations:

Mb: R2+F1+R1+F2-F2*b-F1*a-R2-R1=0

now the weird part is that I could reduce almost everything in the equation above, so that I would only be left with:

Mb: b-a=0

but it doesn't make any sense.

I would appreciate any help, thank you in advance!