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Equilibrium in solid body refers to a state where all forces acting on a solid object are balanced, resulting in a state of rest or constant motion with no acceleration. In this state, the net force and torque on the object are both equal to zero.
Equilibrium in solid body is achieved when the sum of all external forces and torques acting on the object is equal to zero. This can be achieved through proper positioning and distribution of weight, as well as the use of support structures such as ropes, cables, and beams.
In static equilibrium, the object is at rest and there is no change in its position or motion. In dynamic equilibrium, the object is in constant motion at a constant velocity, but the forces and torques acting on it are still balanced. This can occur for example, when an object is in free fall with a constant velocity.
The center of gravity is the point at which the weight of an object can be considered to be concentrated. In order to achieve equilibrium, the center of gravity must be directly above the base of support. If the center of gravity falls outside of the base of support, the object will be unstable and will topple over.
Equilibrium in solid body can be disrupted by the introduction of external forces or changes in the object's mass distribution. This can occur through actions such as pushing, pulling, or adding/removing weight from the object. Additionally, uneven surfaces or friction can also affect the object's equilibrium.