Difference between MASS and WEIGHT
Summary
TLDRThis educational video script from moomoomath and science explores the distinction between mass and weight. It explains that mass, measured in kilograms, is the amount of matter in an object, while weight is the gravitational force exerted on it, measured in Newtons. The script clarifies that an object's mass remains constant regardless of its location, but its weight varies due to differences in gravitational pull, such as on Earth, the Moon, Mars, and Jupiter. The video concludes by emphasizing the importance of understanding these fundamental concepts in physics.
Takeaways
- 📚 Mass and weight are not the same thing; mass is a measure of the amount of matter in an object, while weight is the force of gravitational attraction.
- 🔍 Mass is measured using a balance by comparing it to a known amount of matter, whereas weight is measured using a scale.
- 🌍 The mass of an object remains constant regardless of its location, but its weight changes depending on the gravitational pull of the environment.
- 📏 The SI unit for mass is the kilogram, which was originally defined based on the mass of one liter of water.
- 🌕 In the imperial system, the unit for mass is the slug, which is equivalent to 32 pounds.
- 🌐 Weight is technically a force and should be measured in Newtons, where 1 Newton is the force that gives a 1 kg mass an acceleration of 1 meter per second squared.
- 🌗 The imperial system uses pounds to measure weight, with one pound defined as 0.45359237 kilograms.
- 🌕 On Earth, an object with a mass of 1 kilogram has a weight of about 9.8 Newtons, but this weight varies on other celestial bodies like the Moon.
- 🚀 If an object has a mass of 90.91 kilograms and a weight of 200 pounds on Earth, it would weigh 32 pounds on the Moon, maintaining the same mass.
- 🪐 On different planets like Mars and Jupiter, the weight of the same object changes due to different gravitational forces, but its mass remains constant.
Q & A
What is the difference between mass and weight?
-Mass is the amount of matter an object contains, while weight is the force of gravitational attraction an object feels towards another object, like the Earth's center.
How is mass measured?
-Mass is measured using a balance, which compares a known amount of matter to an unknown amount of matter.
Does the mass of an object change when its location changes?
-No, the mass of an object remains constant regardless of its location.
How does weight differ from mass in terms of location?
-Weight changes with location because it is influenced by the gravitational pull of different celestial bodies.
What is the SI unit for mass?
-The SI unit for mass is the kilogram.
What was the original definition of a kilogram in 1795?
-The kilogram was originally defined as the amount of mass of one liter of water.
What is the unit for mass in the imperial system?
-In the imperial system, the unit for mass is the slug, which has a mass of 32 pounds.
How is weight technically measured?
-Weight is technically measured in Newtons, as it is a measure of the force that gravity is pulling on an object.
What is the weight of an object with a mass of 1 kilogram on the surface of the Earth?
-An object with a mass of 1 kilogram has a weight of about 9.8 Newtons on the surface of the Earth.
How does the weight of an object change on the moon compared to Earth?
-The weight of an object on the moon is about one-sixth of its weight on Earth due to the moon's weaker gravitational pull.
What would be the weight of a 90.91-kilogram cube on Mars?
-A 90.91-kilogram cube would weigh 76 pounds on Mars, but its mass would remain the same at 90.91 kilograms.
How does the weight of an object change on Jupiter?
-On Jupiter, the weight of an object increases due to its stronger gravitational pull compared to Earth.
Outlines
📚 Understanding Mass and Weight
This paragraph explains the difference between mass and weight. Mass is the amount of matter in an object, while weight is the force exerted by gravity on that object. Mass is measured using a balance and remains constant regardless of location, whereas weight changes with location due to varying gravitational forces. The SI unit for mass is the kilogram, and for weight, it's the Newton. The paragraph also clarifies that while weight can vary on different celestial bodies, mass remains the same. For instance, an object with a mass of 1 kilogram has a weight of about 9.8 Newtons on Earth, but only one-sixth as much on the moon.
Mindmap
Keywords
💡Mass
💡Weight
💡Gravitational Attraction
💡Newton
💡Pound
💡Slug
💡SI Unit
💡Balance
💡Matter
💡Location
💡Moon
Highlights
Mass and weight are not the same thing.
Mass is the amount of matter an object contains.
Weight is the force of gravitational attraction an object feels towards another object.
Mass is measured using a balance, comparing known and unknown amounts of matter.
Weight is measured on a scale.
An object's mass does not change with location.
An object's weight changes with location due to different gravitational pulls.
The SI unit for mass is the kilogram.
The kilogram was originally defined based on the mass of one liter of water.
The imperial system uses the slug as the unit for mass.
Weight is technically measured in Newtons, a measure of force.
A Newton is defined as the acceleration of 1 kilogram at 1 meter per second squared.
An object with a mass of 1 kilogram has a weight of about 9.8 Newtons on Earth.
The imperial system uses pounds to measure weight, defined in terms of the kilogram.
Weight varies on the moon and other planets, but mass remains constant.
A cube with a mass of 90.91 kilograms weighs 200 pounds on Earth and 32 pounds on the moon.
On Mars, the same cube would weigh 76 pounds, but its mass remains 90.91 kilograms.
On Jupiter, the cube would weigh 468 pounds, still with the same mass of 90.91 kilograms.
In conclusion, mass measures the amount of matter, while weight measures the force of gravity.
The SI unit for weight is the Newton, with 1 kilogram having a weight of about 9.8 Newtons on Earth.
Transcripts
welcome to moomoomath and science and
maths verse wait isn't mass and weight
the same thing
not really the mass of an object is the
amount of matter an object contains
while weight is a force of the
gravitational attraction the object
feels towards another object like the
Earth's center mass is measured by using
a balance comparing a known amount of
matter to an unknown amount of matter
weight is measured on a scale the mass
of an object doesn't change when an
object's location changes weight on the
other hand changes with location the
mass of an object is a measure of the
amount of matter in it or in other words
the amount of stuff it contains the SI
unit for mass is the kilogram the
kilogram was originally defined in 1795
as the amount of mass of one liter of
water it have since changed if you use
the imperial system the unit for mass is
the slug yes the slug which has a mass
of 32 pounds so if you weigh 161 pounds
on earth your mass is 5 slugs
yes slugs weight is a measure of the
force that gravity is pulling on the
object gravity is a force and therefore
weight technically should be measured in
Newtons a Newton is equal to the
acceleration of 1 kilogram 1 meter per
second squared for an example let's take
an object with a mass of 1 kilogram it
has a weight of about 9.8 Newton's on
the surface of the earth but here's
where it may get a little confusing
there are other units that are used to
describe weight that sound like mass the
imperial system uses the pound to
measure weight and it's defined in terms
of the kilogram as exactly 0.45 three
five nine to thirty seven kilograms
your weight can change based on the
gravitational pull your weight varies on
the moon and other planets but your mass
remains the same if a cube has a mass of
ninety point nine one kilograms and a
weight of 200 pounds on earth it will
weigh 32 pounds on the moon but still
has a mass of ninety point nine one
kilograms on Mars the cube would weigh
76 pounds but it still has the same mass
of 90.9 11 kilograms on Jupiter the cube
weighs 468 pounds but still has the same
mass of ninety point nine one kilogram
so in conclusion mass is a measure of
how much matter something contains which
equals the number of atoms in it weight
is a measure of how strongly gravity
pulls on something the SI unit for mass
is kilograms the SI unit for weight is
the Newton for an example an object with
a mass of one kilogram has a weight of
about 9.8 Newton's on the surface of the
earth and about one-sixth as much on the
moon thanks for watching and moomoomath
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