# What is difference between mass and weight?

The terms “mass” and “weight” are used interchangeably in ordinary conversation, but the two words don’t mean the same thing. The difference between mass and weight is that mass is the amount of matter in a material, while weight is a measure of how the force of gravity acts upon that mass.

## What is physics 11th gravitation?

• Newton’s Law of Gravitation Newton’s law of gravitation states that every particle in the universe attracts every other particle with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

## What is gravitation short note?

Gravity, also called gravitation, is a force that exists among all material objects in the universe. For any two objects or particles having nonzero mass, the force of gravity tends to attract them toward each other. Gravity operates on objects of all sizes, from subatomic particles to clusters of galaxies.

## What are the topics in gravitation Class 11?

• The universal law of gravitation.
• Acceleration due to gravity.
• Kepler’s laws of planetary motion.
• Gravitational potential energy; gravitational potential.
• Escape velocity. Orbital velocity of a satellite. Geostationary satellites.

## What is gravitational force Class 11 formula?

The mathematical formula of the Law of Gravitation is: F = Gm1m2/ r2. In the above formula: F: The Gravitational force between two objects measured in Newton (N). G: It is the Universal Gravitational Constant which has a standard value of 6.674 × 10-11 Nm2kg-2.

## Is gravitation Chapter easy?

Gravitation is an easy to understand and a highly scoring topic. Not the most important. But yes you can expect 1-2 questions from this topic, which could be solved easily.

## What are the 3 laws of gravitation?

So for Newton, the force of gravity acting between the earth and any other object is directly proportional to the mass of the earth, directly proportional to the mass of the object, and inversely proportional to the square of the distance that separates the centers of the earth and the object.

## What is the SI unit of gravitation?

Now, the gravitational force is another type of force. So, the SI unit of gravitational force will be the same as the SI unit of force which is N (newton). And, the SI unit of mass is kg. Note: The gravitational force between two objects of mass Mand m separated at a distance r, is F=GMmr2.

## What is the unit of force?

The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg. The second, unit of time — symbol s.

## What is the value of g?

The acceleration due to gravity on Earth or the value of g on Earth is 9.8 m/s2.

## What is gravitation and its types?

Gravitation or just gravity is the force of attraction between any two bodies. All the objects in the universe attract each other with a certain amount of force, but in most of the cases, the force is too weak to be observed due to the very large distance of separation.

## How many formulas are there in gravitation chapter?

The three equation of motion viz. (iii) v2 – u2 = 2as are true for motion of objects under gravity. For free fall, value of acceleration a = g = 9.5 ms–2. If an object is just let fall from a height then in that as u = 0 and a = g = 9.8 m/s2.

## What are the types of force?

• Gravitational force.
• Electric force.
• Magnetic force.
• Nuclear force.
• Frictional force.

## What is the dimension of gravity?

Therefore, the gravitational constant is dimensionally represented as M-1 L3 T-2.

## What are the 5 examples of gravitational force?

• Stability of the Objects.
• Tides.
• Daily Life Activities.
• Revolution of Celestial Bodies.
• Fruits falling from trees.
• Falling Objects.
• Pouring Drinks.
• Rolling Objects.

## Which is the easiest chapter in physics?

Ans: Yes, Wave Optics is comparatively an easy chapter in Physics.

## Is gravitation important for NEET?

Important notes of Physics for NEET, JEE for Gravitation are useful for all aspirants preparing for entrance exams including JEE, NEET. Important notes are also helpful for revision when you have less time and have to study many topics.

## Can I study gravitation without studying rotational motion?

Apparently you can study the Gravitation without studying the Rotational motion, just by knowing the dynamics such as Centripetal Force, Centrifugal force (just the formulae).

## What is value of Big G?

In SI units, its value is approximately 6.674×10−11 m3⋅kg−1⋅s−2.

## What are the 2 principles of gravity?

Every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of the masses of the particles and inversely proportional to the square of the distance between them.

## Why is G called universal constant?

Universal gravitational constant, G is independent of the nature of the particle, medium between the particles, and time. Its value is constant anywhere in the Universe, and hence it’s called ‘Universal’.

## What kind of unit is g?

gram (g), also spelled gramme, unit of mass or weight that is used especially in the centimetre-gram-second system of measurement (see International System of Units).

## What is the standard unit for g?

acceleration of gravity (symbol g) The standard value of gravity, or normal gravity, g, is defined as go=980.665 centimeters per second squared, or 32.1741 feet per second squared.

## What is the importance of gravitation?

Solution : The importance of universal law of gravitation is that it explains the motion of planets around the sun, the motion of moon around the earth, and the motion of artificial satellites around the earth. It also explains the phenomena of rainfall, snowfall, and flow of water in rivers on the earth.

## What is the symbol of force?

It is measured in the SI unit of newton (N). Force is represented by the symbol F (formerly P).