engineering recuitment OPSC Assistant Industries Officer Mock Test 2025 Engineering Mechanics Equilibrium and Friction
Which is the correct statement about law of polygon of forces?
1
if any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium
2
if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
3
if a polygon representing forces acting at a point is closed then forces are in equilibrium
4
if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, their resultant may be represented in magnitude and direction by the closing side of the polygon, taken in the opposite order.