Question

what are the conditions for the following forces to be in equilibrium.
1. two forces
2. three forces
3. four or more than forces

Answer 1

Answer: 1)When only two forces are acting on a member, equilibrium dictates that the two forces be equal in magnitude, collinear, and opposite in direction

2)When only three forces are acting on a member, equilibrium dictates that these forces must be either

3)for the equilibrium of 2 forces and a torque member. The forces should be of equal magnitude, parallel in direction and opposite in sense also the forces will form a couple that should be equal and opposite to applied torque