A rigid horizontal lever of length L L\,L is pivoted at a fixed point O O\,O at one end. A force of magnitude F F\,F is applied to the other end at an angle θ \theta\,θ to the horizontal line of the lever, as shown in the diagram.
Which of the following expressions correctly represents the magnitude of the moment of this force about the pivot OOO?
FLcosθF L \cos \thetaFLcosθ
FLsinθF L \sin \thetaFLsinθ
FLsinθ\frac{F}{L \sin \theta}LsinθF
FLtanθF L \tan \thetaFLtanθ