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# NCERT Solutions for Class 11 Physics Chapter 8 – Gravitation

NCERT Solutions for Class 11 Physics Chapter 8 include interesting and highly fascinating topics of the chapter. This chapter will unravel the secrets behind the universal law of Gravitation. It is enthralling to know the various facts, facets and aspects about the force of gravitation on the earth apart from taking a peek at the functioning of satellites, space technology etc.  This chapter has 25 questions in total at the end.

Most of the concepts that you will be learning in Physics NCERT Solutions for Class 11 Chapter 8 are almost new to you. Some topics like Kepler’s Laws need thorough understanding and the practice of formulae if you want to solve the questions correctly in exams. Our NCERT Solutions for Class 11 Physics Chapter 8 designed by expert physics teachers at Instasolv give you a bird’s eye view with the detailed explanation of the concepts and their applicability in our day to day life.

Furthermore, our NCERT Solutions are as per the CBSE exam guidelines. They are self-explanatory and contains notes related to the important formulae. They are an irreplaceable guide for you and your exclusive study material. Go for them today and experience the joy of learning in the easiest way.

## Important Points for NCERT Solutions for Class 11 Physics Chapter 8 Gravitation

Chapter 8 of the Class 11 Physics NCERT Solutions book is the lengthiest chapter with several phenomena which are new to you. For an easy understanding, the entire chapter has been divided into 12 sections with each of them having a good number of examples and illustrations in support of texts. These 12 sections include Kepler’s Laws, Universal Law of Gravitation, The Gravitational Constant, Acceleration Due to the Gravity of Earth, Acceleration Due to Gravity, Below and Above the Surface of Earth, Gravitational Potential Energy, Escape Speed, Earth Satellite, Energy of Orbiting Satellite, Geostationary and Polar Satellite and Weightlessness.

The first section defines the Gravitational force and teaches you the distinction between gravitation and gravity to enable you to understand the more complex subjects in future. The most important laws of Gravitation are Kepler’s Laws. You will learn these laws in the second section which state that: (1) Planets move around the Sun in elliptical orbits; 2) The speed of movement of planets around the Sun in elliptical orbits and 3) The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

The next sections deal with the Universal Law of Gravitation, Gravitational Constant, what causes Acceleration, Acceleration due to Gravity of Earth, how Gravitation works both above and below the surface of earth etc.

You are also familiarized with the concept of Potential Energy of Gravitation as well as with the concept of Escape Speed. This chapter throws light on the distance between stars and the speed of light between stars situated in different far off Galaxies as well as the time taken to complete one revolution.

You will learn how far the vertically fired satellites go before getting attracted by the Law of Gravitation. Get to know of the movements of the international space station around the earth and how the earth gravitation force influences it. You will get to understand the medical conditions and problems faced by the astronauts and what are their causes. You will be excited to know of the mass of the Sun as well.

NCERT Class 11 Physics Chapter 8 ignites your imagination with detailed information about various types of Satellites like Geostationary and Polar Satellites and also the amazing and thrilling concept of weightlessness.

### Exercise Discussion of NCERT Solutions for Class 11 Physics Chapter 8

• NCERT Class 11 Physics Chapter 8 includes one main exercise with 21 questions and an additional exercise with 4 questions. You need to solve all these questions if you want to practice all the topics of the chapter.
• The first exercise includes theory questions, multiple-choice questions and numerical-type questions on the topics gravity, tidal effect of sun and moon, orbital size, gravitational intensity, comet orbits, speed of the projectile, equilibrium etc.
• The second exercise includes questions on topics like geostationary satellites and related space technology topics.

### Benefits of NCERT Solutions for Class 11 Physics Chapter 8 by Instasolv

The topic of Gravitation is a complex one. With most of the topics being new, you find yourself unable to understand and remember the core points of the chapter. This is where our NCERT Solutions for Class 11 Physics Chapter 8 can help you. The complex concepts are deciphered in the simple terms for your easy understanding. With the help of our NCERT solutions, you will have a clear cut understanding of the formulae, concepts and laws related to gravitation. So without a doubt start reading our NCERT solutions.

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