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Mass is a measure of inertia and does not change regardless of location, while weight is the force of gravity acting on an object, which varies by location due to the local gravitational acceleration. The section also explains the relationship between mass and weight, particularly when considering different celestial bodies like the Earth and the Moon.
In this section, we explore the concept of mass as a measure of an object's inertia, highlighting that mass remains constant regardless of the object's location, whether on the Earth, Moon, or in space. Weight, on the other hand, is defined as the gravitational force acting on an object and is influenced by the local acceleration due to gravity. For example, an object's weight on the Moon is approximately one-sixth of its weight on Earth due to the Moon's lower gravitational pull. The section employs the universal law of gravitation to define how weight can be calculated based on mass and gravitational acceleration, emphasizing that while mass does not change, weight does vary depending on the strength of gravity at different locations. A detailed mathematical understanding of these concepts is bolstered with formulae such as W = mg, illustrating the fundamental relationship between mass and weight.
Mass is constant regardless of the object's location and is a measure of inertia.
Weight is the force of gravity acting on an object, and it changes depending on the gravitational pull of the celestial body.
Weight can be calculated using the formula W = mg, where 'm' is mass and 'g' is gravitational acceleration.
Gravitational force is the attractive force between two masses, which is defined by the universal law of gravitation.
Mass is what you have inside, in space and time, it's your pride.
Once a boy named Leo traveled to the Moon with a scale. He weighed only 16 N there, but his mass remained forever a perfect 10 kg!
Remember 'MWG' - Mass is Weight Ć Gravity.
An object with a mass of 20 kg weighs about 196 N on Earth (20 kg Ć 9.8 m/sĀ²) and about 32 N on the Moon (20 kg Ć 1.6 m/sĀ²).
When astronauts travel to the Moon, they need to consider their weight decreases even though their mass remains constant.
Term: Mass
Definition: A measure of the amount of matter in an object, which remains constant regardless of location.
A measure of the amount of matter in an object, which remains constant regardless of location.
Term: Weight
Definition: The force of gravity acting on an object, which can vary depending on the gravitational pull of the celestial body the object is on.
The force of gravity acting on an object, which can vary depending on the gravitational pull of the celestial body the object is on.
Term: Gravitational Force
Definition: The attractive force between two bodies due to their masses.
The attractive force between two bodies due to their masses.
Term: Universal Law of Gravitation
Definition: A law stating that every point mass attracts every other point mass in the universe with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them.
A law stating that every point mass attracts every other point mass in the universe with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them.