![]() For example, in the case of Earth, g = 9.80665 m/s², and for the Moon it is about six times less, approximately 1.63 m/s². In physics, weight refers to the force that acts on an object and is calculated as a product of mass and g, the gravitational acceleration that differs depending on the astronomical object, which creates the gravitational field that the object is affected by. In everyday use, the words “mass” and “weight” are often equivalent, both referring to mass. If the force applied to the object and its acceleration are known, we can calculate mass m using Newton’s second law of motion: F = m a, where F is the force and a is the acceleration. It is an inherent property of the object, contrast to weight, which depends on the gravitational field of the planet, where the object is located. Mass is a measure of the resistance of the object to acceleration.
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