Question

Which of the following is NOT essential for three forces to produce zero resultant?

Options

• They should be in same plane.

• It should be possible to represent them by the three sides of a triangle taken in the same order.

• They should act along the sides of parallelogram.

• The resultant of any two forces should be equal and opposite to the third force.

Answer 1

They should act along the sides of parallelogram.

Explanation:

The parallelogram law applies to only two forces, not three, so it is not a required condition for three forces to produce zero resultant.