Define the following term.
(c) Acceleration due to gravity
(d) Mass
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Answer:
- Acceleration due to gravity can be defined as the rate at which the velocity of a freely falling body increases.
- We can define mass as the measure of the amount of matter in a body.
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HEY MATE...!!!✌
✍ What is Acceleration Due to Gravity ?
- Acceleration due to gravity is the acceleration gained by an object due to gravitational force.
- Its SI unit is m/s².
- It has both magnitude and direction, hence, it’s a vector quantity.
- Acceleration due to gravity is represented by g.
- The standard value of g on the surface of the earth at sea level is 9.8 m/s².
✍ Define the term Mass ?
- It is one of the fundamental quantities in Physics and the most basic property of matter.
- We can define mass as the measure of the amount of matter in a body.
- The SI unit of mass is Kilogram (kg).
Note :- The mass of a body does not change at any time. Only for certain 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.
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-: Additional Information :-
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➤ Formula of Acceleration due to Gravity
- Force acting on a body due to gravity is given by, f = mg
- Where f is the force acting on the body, g is the acceleration due to gravity, m is mass of the body.
- According to the universal law of gravitation, f = GmM/(r+h)²
➤ What is Weight ?
- It is the measure of the force of gravity acting on a body.
- The formula for weight is given by :- w = mg
- As weight is a force its SI unit is also the same as that of force, 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 but the acceleration due to gravity does change from place to place.
Hope It Helps You.....✌
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