# What is the total summation of moments at A ?

#### Ganesh Ujwal

What is the total summation of moments at A?

I tried $$\displaystyle \sum M_{A} = F.(d+d )-F(d+d )-F.d$$

#### skipjack

Forum Staff
Any force acting through A has a zero moment at A.

Did you intend the leftmost force to be -F rather than F? If it's -F in the downwards direction, it's equivalent to F in the upwards direction.

#### Ganesh Ujwal

Did you intend the leftmost force to be -F rather than F?
Leftmost force F is acting downward so -F.

#### skipjack

Forum Staff
The arrow shows the force is acting downward, so the magnitude would be F, not -F.

Is the answer FÂ·d intended to be correct?

#### Ganesh Ujwal

The arrow shows the force is acting downward, so the magnitude would be F, not -F.
Are you saying my diagram is wrong?