2006-07-02 06:49:16 · 17 answers · asked by sani 1 in Science & Mathematics ➔ Physics
Mass is the quantity of matter present in a body
Weight is the gravitational pull of the planet on the body. It is the product of mass of the body and the gravitational pull of the planet.
Mass remians same everywhere in the universe. its constant because the amount of matter contained in the object remains same wherever you take it.
Whereas, weight depends upon the gravitational pull. The weight of an object becomes 6 times lesser on moon, as the gravitational pull of moon is 6 times lesser than Earth.
If 'm' is the mass, 'g' is the acceleration due to gravity, then,
Weight, W = m X g
The value of g for earth = 9.8 m/s2
If the mass of a stone is 2 kgs
Then its weight, W = m X g i.e. 2 X 9.8 = 19.6 Newtons
The units of Weight is given in Newton which is the unit for force, because Weight is also a force exerted by the planet on an object.
2006-07-02 07:50:14 · answer #1 · answered by rahulthesweet 3 · 0⤊ 0⤋
Mass is one of the three fundamental quantities; the others are length and time.
All other quantities can be related to two (or all) of these quantities by means of formulae.
But these three quantities are independent of each other.
Therefore, these three quantities cannot be defined by any means.
They could be understood only by intuition.
For example, if we define mass as the quantity of matter in a substance, we cannot answer the questions, what is a substance? What is matter? Etc.
Substance, matter and mass mean one and the same thing, namely mass.
This is the reason why we define the units of these quantities in any system of units and keep these standards for comparison.
We understand the mass only by the force by which the body is made to accelerate.
In order two lift objects, we exert forces on the body and if we feel one is heavier than the other, we say that the heavier one has greater mass and the lighter one has lesser mass.
If we feel that we exert same amount of force to lift two objects, then we say that the two objects are weighing equal. It implies that the two objects are pulled by earth with equal forces. In practice we don’t rely on our feelings, instead we use a balance having two pans. Two objects of different sizes, if balanced, we say they are of equal weights; if not we say they are having different weights.
Thus the weight is the force with which a body is pulled by the earth.
The standard unit mass in SI system is kilogram; if another object is balanced by this unit mass using a balance, we say that these two have the same mass of 1kg, since they are pulled by equal forces by the earth.
The weight and mass are related by the equation W = mg, where g is the acceleration due to gravity at the place and this is independent of the mass; i.e. it is the same for all objects.
With the introduction of Special theory of relativity, mass is deemed as another form of energy.
As for as difference is considered; mass is a fundamental quantity whereas weight is the derived quantity. Hence both are different quantity and of course they are related by the equation
W = Mg where w is the weight and M is the mass and g is the acceleration due to gravity.
2006-07-03 17:44:37 · answer #2 · answered by Pearlsawme 7 · 0⤊ 0⤋
Mass is not the amount of space it takes up-that's volume. Mass is a property that describes an object's matter and energy. Weight is the amount of force that is applied to an object of some mass due to gravity.
2006-07-02 06:57:09 · answer #3 · answered by zmonte 3 · 0⤊ 0⤋
Weight is the net gravitational force exerted on that object by all other objects. This can therefore Vary based on where you are in relation to gravity,and the force of that gravitational pull.
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.
2006-07-02 06:55:36 · answer #4 · answered by onesmaartlady 5 · 0⤊ 0⤋
Mass measures the amount of inertia an object has, which is dependent on the amount of matter the object contains. Weight is the mass times the acceleration of gravity or the amount of the force of gravity on the object.
2006-07-02 06:59:29 · answer #5 · answered by bast_mau 1 · 0⤊ 0⤋
mass is the qty of matter. if u have a definite amount of burger in ur hand on earth and take the same to moon , u will hav the same amt of burger(if u dont eat or disturb it!!!) . on the other hand if u wiegh the burger on earth then on moon , u will find that it doesnt weigh the same!. this is due 2 diff in gravitational force(force with which a planet or moon attracts the burger(object).) mass is the amount of substance while weight is the force exerted on the object by earth or any planet.
2006-07-02 07:15:36 · answer #6 · answered by deeps 1 · 0⤊ 0⤋
MASS mass is measure of how much matter an object has. mass is a constant physical property of matter. mass never change with gravity. WEIGHT weight is measured how strongly gravity pull on that matter. weight is the interaction of mass with gravity. weight changes with gravity.
2016-03-27 01:19:11 · answer #7 · answered by Anonymous · 0⤊ 0⤋
G=weight;
m=mass;
G=m*g;
g=gravitational acceleration= 9.81 on Earth;
The weight is a force and it is measured in Newtons for exemple your weight is aprox 800 N if your mass is 80 kg;
2006-07-02 07:07:08 · answer #8 · answered by Yoda 2 · 0⤊ 0⤋
mass is the amount of material you have and the space it takes up is determined by its density. Mass is in grams or slugs.
Weight is produced when a mass is acted upon by a force.
2006-07-02 07:02:54 · answer #9 · answered by cat_lover 4 · 0⤊ 0⤋
mass is measurement of amount of matter in anybody while weight is the gravitational pull exerted by earth on body
2006-07-02 14:11:47 · answer #10 · answered by ghulamalimurtaza 3 · 0⤊ 0⤋