Question

Five equal forces of 10N each are applied at one point and all are lying in one plane. If the angles
between any two adjacent forces are equal, the resultant of these forces will be :

• A. zero
• B. 10N
• C. 20N
• D. $10\sqrt{2}N$

Answer 1

The correct option is A zero

Consider the problem

Let the forces are

$F_1,F_2,F_3,F_4,F_5$

Now,

we have to find the resultant of

$F_1+F_2+F_3+F_4+F_5$

By polygon rule of vector addition

$F_1+F_2+F_3+F_4=-F_5$

$F_5=-F_5$

$=0$

So, the resultant force will be $0$

hence, the option $A$ is correct answer.