How Did Ships Repair Mass Pole Quora
What is Mass?
It is one of the fundamental quantities in Physics and the most bones property of matter. We can define mass every bit the measure oftheamount of matter in a body. The SI unit of mass is Kilogram (kg).
Note: Themass of a trunk does non modify at any time. But for sure extreme cases when a huge amount of energy is given or taken from a body. For example: in a nuclear reaction, tiny amount of matter is converted into a huge amount of energy, this reduces the mass of the substance.
What is Weight?
It is the measure out of the force of gravity interim on a trunk.
The formula for weight is given by:
westward = mg
As weight is a forcefulness its SI unit is also the same as that of strength, SI unit of weight is Newton (N). Looking at the expression of weight we see that it depends on mass and the acceleration due to gravity, the mass may not change just the dispatch due to gravity does change from place to place. To empathize this concept let's take this example,
Shape of the globe is not completely spherical, but an oblate spheroid, therefore a person standing at the equator is far away from the middle of the earth than a person continuing at the due north pole, as acceleration due to gravity is proportional to the inverse of the square of the distance betwixt two objects, a person continuing at the due north pole would experience more than weight as he is closer to the center of the earth than a person continuing at the equator.
How is Weight Measured?
Following is the formula of a body which has a mass thou and weight of magnitude west:
So it can be said that the weight of an object is directly proportional to its mass.
What is the Deviation betwixt Mass and Weight?
Mass | Weight |
| Mass can never be null. | Weight can be zero. As in space if no gravity acts upon an object, its weight becomes zip. |
| Mass is a scalar quantity. It has magnitude. | Weight is a vector quantity. It has magnitude and is directed toward the center of the Globe or other gravity well. |
| Mass is commonly measured in kilograms and grams. | Weight is unremarkably measured in Newtons. |
| Mass doesn't modify co-ordinate to location. | Weight varies according to location. |
| The mass may be measured using an ordinary rest. | Weight is measured using a spring remainder. |
What is Weightlessness?
Have you lot ever been in an lift? Noticed how you experience similar your weight is been reduced while the elevator goes downwards? That is because the weight you lot feel is the perceived weight or "constructive weight", this is the equal and opposite force the floor exerts on you due to your weight. At present if we remove the floor and let you fall freely, there is nada to exert a force on you and hence y'all will feel weightless even though there is acceleration due to gravity and mass. This is because the constructive weight is equal to zero. Now, let'due south come dorsum to our lift when the lift is going down it is actually moving in the direction of the gravity, hence reducing net dispatch due to gravity, thereby reducing your weight.
The same happens with astronauts in the international space station, as the space stations are orbiting the earth it is actually falling towards the globe indefinitely and everything in information technology is falling including the astronauts so the astronauts feel weightlessness and can float freely around. In all these scenarios the nigh important affair we take to detect is that weight can increase or decrease depending on the acceleration due to gravity merely the mass remains unchanged.
Relation Between Weight and Mass
Consider a torso having large mass and large weight. Instance of this situation is a big object which is hard to throw because the weight of this object is big.
Therefore, the relation between weight and mass tin be derived with the help of Newton's 2d law which explains that the complimentary falling object has an acceleration "thousand" as the magnitude.
If an object with a mass of 1kg falls with an acceleration of 9.8 grand.s-ii, then the magnitude of the force is given as :
F = ma
= (1kg)(ix.8m.due south-two)
= (9.8 kg.one thousand.s-2)
= 9.8N
Therefore, information technology tin can be concluded that the relation between weight and mass of an object with 1kg mass will take a weight of 9.8N.
Source: https://byjus.com/physics/mass-and-weight/
Posted by: dambrosiosheast.blogspot.com
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