what is the difference between mass and weight of the body?
926787
Mass is a constant.  \n\nWeight depends on gravity.\n\nSo, your mass is the same on earth and on the moon,\nbut you would weigh one-sixth as much on the moon\nas you do here on earth.
700545
lbs means pounds, a unit used in english system in finding weight, in metric system the unit is kilograms.
1095815
Mass is the amount of matter present in a body and is an intrinsic property of the body. Mass of an object remains the same always at any place.\n\nWeight on the other hand is the force which a given mass feels due to the gravity at its place. Weight is measured in units of Force like Newton (which is the SI unit of Force).\nIf your mass is 60 kgs then your weight is approximately 60 x 10 = 600 Newtons. This is because\n\nForce = mass x acceleration (From Newton's second Law)\n\nThus, weight = mass x acceleration due to gravity
1041146
There is no such thing as 'true weight.' Your weight fluctuates whether you're on the mountains or in the ocean or on the moon; you can never have a true weight. However, you do have a constant mass (assuming that you didn't go on a diet or bulk up your muscles). Mass and weight are two different concepts.
704233
Yes. Density is mass/volume. Mass does not change, as weight in pounds does, with a change in gravity. Volume is also the same on the earth and on the moon.
1114043
Gravity is the force that holds everything down. Gravity also affects different people depending on their body mass. It you are taller, you have a greater gravitational pull on you which makes you weigh more.  The force of gravity is strongest when it is closest to the core of the Earth. The closest that we can get to the core of the Earth is sea level. So you would weigh more at sea level than you would on a top of the mountain. You would still have the same body mass, but just a different body weight. Mass is how much matter is in something, and weight is the measure of the gravitational pull on you. So that is how you can weigh a lot if you are taller. You're not fat, you just have a strong gravitational pull.
609693
weight = mass * gravity\ntherefor\nmass = weight/gravity\n\nsorry naughty but you're wrong, if you go to the moon or jupiter you will have the same mass you have in earth but you'll have a different weight
709561
An object has mass regardless of gravity.  Gravity gives us 'weight' by placing force on the mass.\n\nSo, strictly speaking, an object's "mass" is a measure of how much matter it contains.  An object's "weight" is a measure of gravity's effect on that object.\n\nSo an object's mass doesn't change if it is on a different planet, but its weight will.
1134237
On earth, mass and weight are equivalent, but in physics, it's more correct to use mass (since sometimes objects in physics problems are not on earth!)\n\nSo if the object weighs 1 kg, you can use 1 kg as its mass. One newton is the force needed to accelerate 1 kg (mass) at a rate of 1 meter per second^2.
207775
Mass is only one variable in an equation... what are you trying to relate it to?\n\nweight = mass x gravity would be one equation for mass...
565457
Mass is a property of a physical object that quantifies the amount of matter and energy it contains. Unlike weight, the mass of something stays the same regardless of location. In relativity, the quantity invariant mass, which is closest in content to the classical idea of mass, also does not vary between single observers in different reference frames. Mass is a central concept of classical mechanics and related subjects, and also several forms of mass appear in relativistic kinematics (see mass in special relativity).\n\nThere are three different quantities called mass:\n\nInertial mass is a measure of an object's resistance to changing its state of motion when a force is applied. An object with small inertial mass changes its motion more readily, and an object with large inertial mass does so less readily. \nPassive gravitational mass is a measure of the strength of an object's interaction with the gravitational field. Within the same gravitational field, an object with a smaller passive gravitational mass experiences a smaller force than an object with a larger passive gravitational mass. (This force is called the weight of the object. In informal usage, the word "weight" is often used synonymously with "mass", because the strength of the gravitational field is roughly constant everywhere on the surface of the Earth. In physics, the two terms are distinct: an object will have a larger weight if it is placed in a stronger gravitational field, but its passive gravitational mass remains unchanged.) \nActive gravitational mass is a measure of the strength of the gravitational field due to a particular object. For example, the gravitational field that one experiences on the Moon is weaker than that of the Earth because the Moon has less active gravitational mass. \n\nAlthough inertial mass, passive gravitational mass and active gravitational mass are conceptually distinct, no experiment has ever unambiguously demonstrated any difference between them. One of the consequences of the equivalence of inertial mass and passive gravitational mass is the fact, famously demonstrated by Galileo Galilei, that objects with different masses fall at the same rate, assuming factors like air resistance are negligible. The theory of general relativity, the most accurate theory of gravitation known to physicists to date, rests on the assumption that inertial and passive gravitational mass are completely equivalent. This is known as the weak equivalence principle. Classically, active and passive gravitational mass were equivalent as a consequence of Newton's third law, but a new axiom is required in the context of relativity's reformulation of gravity and mechanics. Thus, standard general relativity also assumes the equivalence of inertial mass and active gravitational mass; this equivalence is sometimes called the strong equivalence principle.\n\nIf one were to treat inertial mass mi, passive gravitational mass mp, and active gravitational mass ma distinctly, Newton's law of universal gravitation would give as force on the second mass due to the first mass\n\n \nNewton's third law, of reciprocal actions, shows that active and passive mass are proportional. As a result they can be defined to be equal\n\nIn the SI system of units, mass is measured in kilograms (kg). Many other units of mass are also employed, such as: grams (g), metric tons, pounds, ounces, long and short tons, quintals, slugs, atomic mass units, Planck masses, solar masses, and eV/c2.\n\nThe eV/c2 unit is based on the electron volt (eV), which is normally used as a unit of energy. However, because of the relativistic connection between (rest) mass and energy, E = mc2 (see below), it is possible to use any unit of energy as a unit of mass instead. Thus, in particle physics where mass and energy are often interchanged, it is common to use not only eV/c2 but even simply eV as a unit of mass (roughly 1.783 × 10-36 kg).\n\nBecause the gravit
80825
The weight (or the mass) of a planet is determined by its gravitational effect on other bodies. Newton's Law of Gravitation states that every bit of matter in the universe attracts every other with a gravitational force that is proportional to its mass. For objects of the size we encounter in everyday life, this force is so minuscule that we don't notice it. However for objects the size of planets or stars, it is of great importance.\n\nIn order to use gravity to find the mass of a planet, we must somehow measure the strength of its "tug" on another object. If the planet in question has a moon (a natural satellite), then nature has already done the work for us. By observing the time it takes for the satellite to orbit its primary planet, we can utilize Newton's equations to infer what the mass of the planet must be.
298529
If you know the density of the material, you can measure it's volume.  D = M / V.  Therefore, the mass equals the density of the object times the volume.  The weight of the material is its mass times gravity.
747425
I suppose mass is a fairly easily measured value. Compared to finding the number of atoms, it's easier to just stick a sample on a scale/balance and weigh it.\n\nAnd the masses provided on the periodic table are weighted averages of the different isotopes found in nature.
279746
A pound of fat weighs a pound.\nA pound of muscle weighs a pound.\nBUT...a pound of muscle takes up LESS SPACE than a pound of fat.\n"A pound of fat has more than two times the volume of a pound of muscle. A 150 pound lady that has only 25 pounds of fat on her body will fit easily in a dress that a 135 pound lady with 50 pounds of fat cannot possibly fit into."
87856
It all depends on the definition of what we call as weight.  Generally weight is defined as the force equal to the product of mass and acceleration due to gravity. By this definition the weight of an object is the same irrespective of its surrounding medium.\n\nBut often we deal with problems when an object is surrounded by some medium say air or water.\n\nIn that case we have to say that the weight in air or weight in water.\n\nBy ‘weight in air’ we mean the net force (weight in vacuum minus the upward force due to air)\n\nBy ‘weight in water’ we mean the net force (weight in vacuum minus the upward force due to water)\n\nTherefore,\n The weight in vacuum will be greater than the weight in air. \nThe weight in air will be greater than the weight in water.\n\nIf nothing is added (surrounded) to the term weight, \nWeight means weight in vacuum\n\nAnd is the same whether it is in air or water.
451020
Weight is define by your mass times the acceleration due to gravity where you are.  So you mass is the same anywhere in the universe but your weight will be effected by where you are.  Now what is weight measured in?  This is dependent on the units you use for mass and acceleration.  Using kilograms for mass and m/s^2 for acceleration you will get newtons.  Use slugs and ft/s^2 you get a pound-force.  Using a standard equivalence between pounds and kilograms you get kilogram-force.  Many people think kilograms is a measure of weight when it really is not, its kilograms-force.  There should be somewhere on most scales that will show a lbf or kgf instead of just lb or kg.  Newtons is the standard SI unit of measure though.\n\nEdit: when i say acceleration, i mean acceleration due to gravity.  Weight *is* a unit of force.\n\nhoarp001:  Weight is a unit of force, all the units you put there are units of mass, not weight.\n\nzeno : "From other experiments, we know that g, or acceleration by free fall is actually an acceleration of 9.8N at sea level"  G is acceleration due to gravity.  According to your "9.8N" your mass would be a kg*N, not newtons.  Pay attention to your units, especially since he was asking a unit question.  Standard SI would be 9.8 meters / second^2, CGS would be 980 centimeters / second^2.  If using standard engineering units, it would be 32 feet / second^2.  Bascially anything that is a length per time ^2.