Solve Torque Problem Homework: Finding Moment of Force on L-Shaped Bracket

[NoobeAtPhysics]

Homework Statement

Find the moment (vector) of the force acting on the “L-shaped”
bracket about the axis indicated.

Homework Equations

m=rf

The Attempt at a Solution

Hypotenuse of triangle = sqrt(13)

Moment = sqrt(13)* 5 nm


This is a wrong according to my textbook however I do not understand why.

 

[SteamKing]

The 5.0 N force is not acting perpendicular to the moment arm. Review the definition of how to calculate a moment.

 

[xophergrunge]

The moment is a cross product, you haven't taken into account the angle between the moment arm and the force.