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[[Image:lighterstill.jpg]][[Image:Gforce.jpg|right|frame]]
[[Image:lighterstill.jpg]][[Image:Gforce.jpg|right|frame]]
In [[physics]], '''force''' is anything that can cause a [[mass]] to accelerate. It may be experienced as a lift, a push, or a pull. The acceleration of the body is proportional to the [[vector sum]] of all forces acting on it (known as ''net force'' or ''resultant force''). In an extended body, force may also cause rotation, deformation, or an increase in pressure for the body. Rotational effects are determined by the torques, while deformation and pressure are determined by the [[stress]]es that the forces create.
In [[physics]], '''force''' is anything that can cause a [[mass]] to accelerate. It may be experienced as a lift, a push, or a pull. The acceleration of the body is proportional to the [[vector sum]] of all forces acting on it (known as ''net force'' or ''resultant force''). In an extended body, force may also cause rotation, deformation, or an increase in pressure for the body. Rotational effects are determined by the torques, while deformation and pressure are determined by the [[stress]]es that the forces create.
