A force of 40   N acts on a point B at the end of an L-shaped object as shown in the figure. The angle…

A force of $40 \mathrm{N}$ acts on a point $B$ at the end of an L-shaped object as shown in the figure. The angle $\theta$ that will produce the maximum moment of the force about point $A$ is given by:

1. $\tan \theta =4$
2. $\tan \theta =\frac{1}{4}$
3. $\tan \theta =\frac{1}{2}$
4. $\tan \theta =2$

Solution

Moment of force will be maximum when the line of action of force is perpendicular to line $AB$, $\tan \theta =\frac{2}{4}=\frac{1}{2}$.

Asked in: JEE Main 2018 (15 Apr)

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