railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mechanics Equilibrium and Friction Equilibrium
According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then-
1
The algebraic sum of their moments about any point in their plane is zero
2
Their lines of action are at equal distances
3
The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point
4
Their algebraic sum is zero