The phenomenon describing the gravitational force acting on an object at rest is termed weight. Weight is the force exerted by gravity on an object’s mass and is proportional to the mass of the object and the gravitational acceleration (commonly 9.81 m/s² on Earth). This force determines how objects behave when at rest or in motion under gravity. Understanding weight is crucial in physics and engineering applications, influencing everything from structural design to the behavior of materials in various environments.