COSMOS: Complete Online Solutions Manual Organization System
Chapter 3, Solution 1.
Resolve 90 N force into vector components P and Q
where Q = ( 90 N ) sin 40°
= 57.851 N
Then M B = − rA/BQ
= − (0.225 m )(57.851 N )
= −13.0165 N ⋅ m
M B = 13.02 N ⋅ m
.