Download CBSE Class 11 Physics Gravitation Notes Set C in PDF format. All Revision notes for Class 11 Physics have been designed as per the latest syllabus and updated chapters given in your textbook for Physics in Class 11. Our teachers have designed these concept notes for the benefit of Class 11 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 11 Physics for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 11 Physics given on studiestoday
Revision Notes for Class 11 Physics Chapter 8 Gravitation
Class 11 Physics students should refer to the following concepts and notes for Chapter 8 Gravitation in Class 11. These exam notes for Class 11 Physics will be very useful for upcoming class tests and examinations and help you to score good marks
Chapter 8 Gravitation Notes Class 11 Physics
Class XI: Physics
Chapter 8: Gravitation
Chapter Notes
Key Learnings:
1. Newton’s law of universal gravitation states that the gravitational force of attraction between any two particles of masses m1 and m2 separated by a distance r has the magnitude F=G m1m2/r2 Where G, the universal gravitational constant, has the value 6.672 x 10-11 Nm² kg-².
2. From the principle of superposition each force acts independently and uninfluenced by the other bodies. The resultant force FR is then found by vector addition.
3. For small heights h above the earth’s surface the value of g decreases by a factor (1-2h/R).
4. The gravitational potential energy of two masses separated by a distance r is inversely proportional to r.
5. The potential energy is never positive; it is zero only when the two bodies are infinitely far apart.
6. The gravitational potential energy associated with two particles separated by a distance r is given by
V=-GM1M2/r Where V is taken to be zero at r→ ∞.
7. The total mechanical energy is the sum of the kinetic and potential energies. The total energy is a constant of motion.
8. If an isolated system consists of a particle of mass m mobbing with a speed v in the vicinity of a massive body of mass M, the total mechanical energy of the particle is given by E=1/2mv2-GMm/r.
If m moves in circular orbit of radius a about M, where M >> m, the total energy of the system is E=-GMm/2a.
9. The escape speed from the surface of the Earth isve=√2GME/RE =√2gRE And has a value of 11.2 km s-1.
10. Kepler’s law of planetary motion:
i. The orbit of the planet is elliptical with sun at one of the focus - LAW OF ORBITS.
ii. The line joining the planet to the sun sweeps out equal area in equal interval of time - LAW OF AREAS.
iii. The square of the planet’s time period of revolution T, is proportional to the cube of semi major axis a.
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CBSE Class 11 Physics Chapter 8 Gravitation Notes
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Notes for Physics CBSE Class 11 Chapter 8 Gravitation
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Chapter 8 Gravitation Notes for Physics CBSE Class 11
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Chapter 8 Gravitation CBSE Class 11 Physics Notes
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Notes for CBSE Physics Class 11 Chapter 8 Gravitation
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