Question 321: Centre of Mass and Rotational Motion

Question

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 $	heta $ that will produce maximum moment of the force about point $A$ is given by :
![](https://learnqa.s3.ap-south-1.amazonaws.com/images/16110870147572952429870090.png)

Accepted Answer

We can produce maximum moment of force, when line of action of force is perpendicular to line AB.
$	herefore\,\,\,\,$ $	an 	heta $ = ${2 \over 4}$ = ${1 \over 2}$
![](https://app-content.cdn.examgoal.net/fly/@width/image/1l7u6zsvh/1e42bedd-6565-423f-8087-53d1dc6f2cef/ff7e09d0-3015-11ed-ab58-4f43f7f8c851/file-1l7u6zsvi.png?format=png)

Answer

$	an 	heta  = {1 \over 2}$

Answer

$	an 	heta  = 2$

Answer

$	an 	heta  = 4$

Answer

$	an 	heta  = {1 \over 4}$

Centre of Mass and Rotational Motion

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 \theta that will produce maximum moment of the force about point A is given by :

Choose the correct answer: