Question

В чем отличие массы от веса,как они связаны между собой ?

Answer 1

Масса - это масса, измеряется в кг, а вес - это сила, с которой масса действует на опору, измеряется в ньютонах. Просто обычно подразумевается, что действие происходит на Земле, и поэтому домножение на ускорение свободного падения опускают. Говорят не вес 98 ньютонов (10кг*9.8), а вес 10 кг, подразумевая силу, с которой 10 кг давят на опору на поверхности Земли.
В невесомости вес исчезает, а масса остаётся.

Answer 2

Difference between Mass and Weight

Mass and weight are two different concepts in physics, although they are often used interchangeably in everyday language. Let's explore the difference between mass and weight and how they are related to each other.

Mass refers to the amount of matter an object contains. It is a fundamental property of an object and is measured in kilograms (kg). The mass of an object remains constant regardless of its location in the universe. In other words, an object will have the same mass on Earth, the Moon, or even in outer space.

Weight, on the other hand, is the force exerted on an object due to gravity. It is the measure of the gravitational force acting on an object and is dependent on the mass of the object and the acceleration due to gravity. Weight is measured in newtons (N) and can vary depending on the strength of gravity at different locations. On Earth, the acceleration due to gravity is approximately 9.8 m/s^2.

Relationship between Mass and Weight

The relationship between mass and weight can be described using the equation:

Weight (W) = Mass (m) x Acceleration due to gravity (g)

This equation shows that weight is directly proportional to mass and the acceleration due to gravity. As the mass of an object increases, its weight also increases. Similarly, as the acceleration due to gravity increases, the weight of an object also increases.

It's important to note that mass and weight are proportional to each other but are not the same thing. Mass is an intrinsic property of an object, while weight depends on the gravitational force acting on the object.

Conclusion

In summary, mass refers to the amount of matter in an object and is measured in kilograms. Weight, on the other hand, is the force exerted on an object due to gravity and is measured in newtons. While mass remains constant, weight can vary depending on the strength of gravity. The relationship between mass and weight is described by the equation W = m x g, where W is weight, m is mass, and g is the acceleration due to gravity.