Equilibrium of a rigid body

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Equilibrium of A Right Body
When an object is not in any kind of movement, that state is known as static equilibrium. The two states for equilibrium displayed by static bodies (like meter sticks) are 1. The vector total torques on that object should be zero and 2. The vector total force on that object should be zero. Static equilibrium for any rigid object: An object (or any portion of that object) that is currently static will remain static as far as the resultant moment as well as resultant force remain zero for every couple and force subjected on it (Yang et al. 66). This paper examines the state equilibrium for rigid objects and explore all aspects that are evident on for these states. For an object to be in balance, it must experience no speeding up. This implies both the net power and the net torque on the question must be zero.
For any simple linear object fixed at the pivot, torque is determined by two things which are lever arm l and force F. Torque is

Torques, which play part of rotating the object through anti-clockwise way are positive while the one rotating the object through clockwise direction are negative torques. Any point within the static object in equilibrium might be selected to be the pivot point.

Newton’s 3rd law: States that all actions have reactions equal in extent and contrasting in directions (Pandrea et al. 42). This law offers the method applied for one object (or a section of an object) to interrelate with another object (or another section of the object).

 Free-Body Diagram: This is a diagram about an object (or a section of it) that shows all couples and forces applied on the body, as well as the one having all the couples and forces labeled for usage within the answer of the challenge, is known as free-body diagram (Yang et al. 66). 
Composite bodies as well as internal forces:  Couples and forces that are caused by interaction among one section of a body and another section of the same body will not occur within the free-body figure of the entire body (Yang et al. 68). It is because of Newton’s 3rd rule. The two objects in the example below are joined at A. After the two sections are observed at as distinct bodies, the internal couples and forces are added collectively, and hence the third law by Newton will cancel.

Couples and forces on free-body diagrams: Each couple or force one apply on any free-body diagram characterizes an ideal of the way its environments influence an object in the free-body diagram.
A two-force member: An object that has force put to it at just two points, while no couples directed onto the same body, is known as a two-force member (Goodarzi et al. 50). Two-force members might only be at equilibriums when lines of action caused by the subsequent forces at every point go thru the other area, and each subsequent force is the same regarding magnitude but differing in terms direction of the subsequent forces exerted to the next point.
Three-force member: An object with forces exerted to it at just three different points, while no couples exerted to the same body, is known as a three-force member (Yang et al. 68). Three-force members might be in equilibriums when the line of actions for the subsequent forces at every point interconnect at a similar point.

Works Cited
Goodarzi, Farhad A., and Taeyoung Lee. “Dynamics and control of quadrotor UAVs transporting a rigid body connected via flexible cables.” American Control Conference (ACC), 2015. IEEE, 2015.
Pandrea, Nicolae, and Nicolae-Doru Stanescu. Dynamics of the rigid solid with general constraints by a multibody approach. John Wiley & Sons, 2016.
Yang, Y. B., S. R. Kuo, and J. D. Yau. “A new buckling theory for curved beams of solid cross sections derived from rigid body and force equilibrium considerations.” The IES Journal Part A: Civil & Structural Engineering 7.2 (2014): 63-72.