Question

Four forces act on a point object. The object will be in equilibrium, if:

• A. all of them are in the same plane
• B. they are opposite to each other in pairs
• C. the sum of x, y and z - components of forces zero separately
• D. they form a closed figure of 4 sides when added as Polygon law

Answer 1

The correct option is D they form a closed figure of 4 sides when added as Polygon law

the equilibrium condition is obtained when the net force acting on the body is zero. and a closed polygon of 4 sides will give the resultant force as zero and forcing acting will be in the same plane