A force of 56 pounds acts on the pipe wrench shown.
find the magnitude of the moment about O by evaluating || OA x F ||
|| OA x F ||
The Attempt at a Solution
First I tried to find my vector component for Force which I got
-56 [ cos(30)i + sin(30)j ]
Since my force on wrench is 56 pounds and it is in a downward vertical I used F=-56
To which my vector for F simplified to =
Now I needed to find a component vector from O to A.
Which I initially thought would be
Since 3/2 ft (18in) is how long my wrench is?
after I get my two vector components I use the cross product and find the magnitude. I just needed some guidance on my vectors for F and vector(OA)