NCERT Solutions for Class 9 Science Chapter 10
Important NCERT Questions
Gravitation
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-144
Questions No-7
What is the importance of universal law of gravitation?
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The universal law of gravitation proves that every object in the universe attracts every other object.
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The universal law of gravitation, conceptualized by Sir Isaac Newton in the 17th century, holds immense significance due to its profound impact on various scientific domains and its ability to explain fundamental aspects of the universe.
1. Planetary Motion Insights: Newton’s law explains how celestial bodies, like planets and moons, interact through gravitational forces. This elucidates their orbits around a central mass, offering key insights into planetary motion.
2. Predictive Power: Scientists leverage this law to predict the paths of celestial objects within our solar system and beyond. It provides a mathematical framework to forecast the movements and interactions of astronomical bodies, aiding in astronomical observations and space missions.
3. Tidal Phenomena Understanding: The law accounts for tidal phenomena on Earth caused by gravitational forces between the Earth, Moon, and Sun. Understanding tides is pivotal for coastal regions, navigation, and ecological systems.
4. Universal Gravitational Attraction: Newton’s law highlights how objects with mass exert gravitational attraction on each other. It explains interactions not only between celestial bodies but also everyday objects on Earth, showcasing the universal nature of gravity.
5. Pioneering Physics Foundation: This law laid the groundwork for classical mechanics, marking a significant milestone in the advancement of physics. It introduced a framework to comprehend forces, motion, and interactions between objects, impacting subsequent theories and discoveries.
6. Space Exploration Advancements: Gravitational insights aid in calculating trajectories and maneuvers for space missions. It’s crucial in planning spacecraft trajectories, orbital insertions, and gravitational assists for interplanetary exploration.
7. Scientific Progress Catalyst: Newton’s law represents a testament to the power of empirical observations, mathematical formulations, and scientific theories. It paved the way for further inquiries into gravitational physics, culminating in subsequent theories like Einstein’s general relativity.
In summary, the universal law of gravitation stands as a cornerstone in astronomy, physics, and scientific exploration. Its applications span from explaining planetary motion to influencing our understanding of forces, motion, and the workings of the cosmos. It continues to shape our comprehension of the universe, inspiring scientific inquiries and advancements.