Recent content by emohabatzadeh

Thank You all...that's right...

Homework Statement we know that, every force systems can be generally replaced by a resultant force(R) and a couple(M) at a point O and the position of point O is optional. but magnitude and direction of M is dependent to this point while magnitude and direction of R is independent. In static...

thanks and you can call me with the nickname Estak...! in fact I have no answer to the question...it's not a numerical problem...it's a fundamental problem...! perhaps the question should be answered by a theorem...

"static implies no translation or rotation"...but it seems that for proving "no rotation about any point" you should calculate the resultant couple moment about any point and specify that the resultant couple equals to zero for any point !( because the couple is dependent to the points...

1.we know that generally, every force systems can be replaced by a resultant force(R) and a couple(M) at a point O. the position of point O is optional. but magnitude and direction of M is dependent to this point while magnitude and direction of R is independent. In static equilibrium R and M...