A force of $40 \mathrm{~N}$ acts on a point $\mathrm{B}$ at the end of an L-shaped object, as shown in the…
A force of $40 \mathrm{~N}$ acts on a point $\mathrm{B}$ at the end of an L-shaped object, as shown in the figure. The angle $\theta$ that will produce maximum moment of the force about point $\mathrm{A}$ is given by:
$\tan \theta=\frac{1}{4}$
$\tan \theta=2$
$\tan \theta=\frac{1}{2}$
$\tan \theta=4$
Solution
To produce maximum moment of force line of action of force must be perpendicular to line $\mathrm{AB}$.
$\therefore \tan \theta=\frac{2}{4}=\frac{1}{2}$
