Chapter 5 of 30
Concept Maps
Gravitation — Concept Maps
NIOS · Class 12 · Physics
4 concept maps of Gravitation for NIOS Class 12 Physics, each also written out as a text outline. Part of the NIOS Class 12 Physics syllabus.
45 questions35 flashcards17 formulas & key relations5 concepts
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4 Concept Maps
Gravitation – Complete Chapter Mind Map
The map in words
- Gravitation
- Newton Law
- F = Gm1m2 divided by r squared
- G = 6.67 x 10 power -11
- Always Attractive
- Vector Form
- F12 = -F21
- Newton Third Law
- Acceleration g
- g = GM divided by R squared
- Value 9.8 m per s squared
- Independent of Mass
- Free Fall
- Galileo Experiment
- Variation of g
- With Height
- gh = g divided by 1 plus h over R squared
- Decreases
- With Depth
- gd = g times 1 minus d over R
- Linear decrease
- Zero at centre
- With Latitude
- Maximum at Poles
- Minimum at Equator
- Earth Rotation Effect
- With Height
- Weight and Mass
- W = mg
- Mass is constant
- Weight varies
- Beam vs Spring Balance
- Gravitational PE
- U = -GMm divided by r
- Negative value
- Zero at infinity
- Potential V = -GM over r
- Unit J per kg
- Kepler Laws
- First Law
- Elliptical Orbit
- Sun at Focus
- Second Law
- Equal Areas
- Equal Time
- Angular Momentum
- Third Law
- T squared proportional r cubed
- T1 sq over T2 sq = r1 cube over r2 cube
- First Law
- Escape Velocity
- vesc = root 2GM over R
- 11.2 km per s for Earth
- sqrt2 times v orbital
- Independent of mass
- Artificial Satellites
- Orbital Velocity
- vorb = root GM over r
- 7.9 km per s near Earth
- Polar Satellite
- 800 km height
- 100 min period
- Remote Sensing
- Geostationary
- 36000 km height
- 24 hour period
- Communication
- Weightlessness
- Free Fall State
- Apparent Weight Zero
- ISRO
- PSLV
- GSLV
- Chandrayaan
- Orbital Velocity
- Newton Law
Correct vs Incorrect Thinking: Key Gravitation Concepts
The map in words
- Common Misconception
- What is the truth?
- Heavier objects fall faster
- Both fall at same rate in vacuum
- Key Formula: a = F divided by m = g independent of mass
- Both fall at same rate in vacuum
- g increases with depth
- g decreases linearly to zero at centre
- No gravity in space
- g at ISS is 8.68 m per s squared
- Orbital velocity increases with altitude
- v is proportional to 1 divided by root r
- Heavier objects fall faster
- What is the truth?
Gravitation — Complete Chapter Mind Map
The map in words
- Gravitation
- Newtons Law
- Formula F = Gm1m2 per r2
- G = 6.67e-11 Nm2 per kg2
- Always Attractive
- Acts Along Line of Masses
- Acceleration Due to Gravity
- g = GM per R2
- Value 9.8 m per s2
- Independent of Mass
- Variation with Height
- g decreases
- g_h = g divided by 1 plus h per R squared
- Variation with Depth
- g decreases linearly
- g_d = g times 1 minus d per R
- g = 0 at centre
- Variation with Latitude
- Maximum at Poles
- Minimum at Equator
- Potential and Energy
- Potential V = minus GM per r
- Unit J per kg
- Potential Energy U = minus GMm per r
- Negative means Bound System
- Weight vs Mass
- Mass is Constant
- Weight W = mg varies
- Spring Balance measures Weight
- Beam Balance measures Mass
- Keplers Laws
- Law 1 Elliptical Orbits
- Sun at Focus
- Law 2 Equal Areas Equal Time
- Conservation of Angular Momentum
- Law 3 T squared proportional to r cubed
- T1sq per T2sq = r1cube per r2cube
- Law 1 Elliptical Orbits
- Orbital Velocity
- v_orb = root GM per r
- Decreases with Height
- Independent of Satellite Mass
- Escape Velocity
- v_esc = root 2GM per R
- From Earth 11.2 km per s
- v_esc = root2 times v_orb
- Artificial Satellites
- Polar Satellites
- Height 800 km
- Period 100 minutes
- Remote Sensing
- Weather Monitoring
- PSLV Launch Vehicle
- Geostationary Satellites
- Height 36000 km
- Period 24 hours
- TV and Communication
- GSLV Launch Vehicle
- Polar Satellites
- ISRO Achievements
- PSLV and GSLV
- EduSat First Educational Satellite
- Chandrayaan Moon Mission
- Satellites for Other Countries
- Newtons Law
Gravitation
The map in words
- Gravitation
- Newton's Law of Gravitation
- Acceleration Due to Gravity
- Variation of g
- Weight and Mass
- Gravitational Potential and Potential Energy
- Kepler's Laws of Planetary Motion
- Orbital Velocity
- Escape Velocity
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Explore DiagramsFrequently Asked Questions
What are the important topics in Gravitation for NIOS Class 12 Physics?
Key topics in Gravitation include Newton's Universal Law of Gravitation, Acceleration Due to Gravity (g), Variation of g with Height, Depth, and Latitude, Weight, Mass, Gravitational Potential and Potential Energy. Study these first, then practise questions on each for the NIOS Class 12 board exam.
What do the concept maps for Gravitation show?
The 4 maps show how the ideas in Gravitation connect: Gravitation – Complete Chapter Mind Map; Correct vs Incorrect Thinking: Key Gravitation Concepts. Each map is also written out as an outline on this page.
How should I revise Gravitation for the NIOS Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Gravitation. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Gravitation
Practice Quiz
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Important Questions
Exam-style questions with answers
Revision Notes
Key points for last-minute revision
Formula Sheet
The chapter's formulas in one place
Chapter Summary
Understand the chapter at a glance
Study Plan
Step-by-step plan for this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
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