Question

In case of concurrent and coplanar forces, the condition of equilibrium is
1. ∑H = 0; ∑V = 0; ∑M = 0
2. ∑H = 0; ∑V = 0
3. ∑H = 0; ∑V ≠ 0
4. ∑H = 0; ∑M = 0

Answer 1

Correct Answer - Option 1 : ∑H = 0; ∑V = 0; ∑M = 0

Explanation:

The Coplanar Forces in Equilibrium:

• Coplanar forces can be defined as forces that act on the same plane. There are certain conditions for Coplanar Forces to be in equilibrium. These include:
• ​The sum of forces must be zero in horizontal and vertical direction.
  • ​∑H = 0, ∑V = 0
• The sum of the moments of the forces about a point in the anticlockwise direction is equal to the sum of the moments of the forces about the same point in the clockwise direction,.
  • ​∑M = 0
• ​It is important to note that there are various kinds of coplanar forces. In concurrent coplanar forces of equilibrium, the forces in one plane must intersect at one point. It can be calculated using graphical and algebraic methods.