Calculate the magnitude of the resultant moment about point

Calculate the magnitude of the resultant moment about point A using scalar analysis. Indicate the sense of direction in your answer with a directional arrow.

Solution

Here ,

for the moment of forces about point A

let\'s take clockwise as positive direction

net moment about A = -12 * (3) - 5 * 1 - 7 * sin(25) * 5.75 + 7 * cos(25) * 1

solving

net moment about A = -51.7 N.m

the net moment of forces about point A is 51.7 N.m in anti clockwise direction