Question 131 of 280

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:

A$\tan \theta=\frac{1}{4}$B$\tan \theta=2$C$\tan \theta=\frac{1}{2}$D$\tan \theta=4$

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Answer: (C) $\tan \theta=\frac{1}{2}$

To produce maximum moment of force line of action of force must be perpendicular to line $\mathrm{AB}$.


$\therefore \tan \theta=\frac{2}{4}=\frac{1}{2}$