## mass

### In physics, mass is a fundamental property of matter that quantifies the amount of matter in an object

In physics, mass is a fundamental property of matter that quantifies the amount of matter in an object. It can also be thought of as a measure of the inertia of an object, which is its resistance to changes in motion. The SI unit of mass is the kilogram (kg).

There are two types of mass that are commonly discussed: gravitational mass and inertial mass. Gravitational mass refers to the mass that interacts with the force of gravity, determining the strength of the gravitational attraction between objects. Inertial mass, on the other hand, refers to the mass that determines an object’s resistance to changes in its motion when subjected to a force.

In everyday life, we often use mass and weight interchangeably. However, it is important to note that weight is a different concept from mass. While mass is a property of an object, weight is the force exerted on an object due to gravity. Weight is directly proportional to mass, and the formula to calculate weight is given by W = mg, where W represents weight, m represents mass, and g represents the acceleration due to gravity.

Mass is usually measured using a balance or a scale, which compares the mass of the object with known masses. It is an essential concept in various scientific fields, including physics, chemistry, and engineering, as it plays a significant role in understanding and predicting the behavior of objects in motion and in interactions with other objects.

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