Q1
What is gravitation?
AUniversal attraction force between masses
BOnly a force on Earth
CA repulsive force
DA force only between planets
SSCClass 10 (SSC)Science and Technology (विज्ञान आणि तंत्रज्ञान)Ch 1 · Topic 2
Practice and Revision - Gravitation
Let us practise and revise what we learned about gravitation. Gravitation is the universal force of attraction between objects with mass, ex
Core concept
Newton's law of universal gravitation states that every object attracts every other object with a force proportional to their masses and inversely proportional to the square of the distance between them.
How it works
The formula F=G(m1×m2)/r² calculates gravitational force, where G is the gravitational constant, m1 and m2 are masses, and r is distance.
Why it matters
Gravity causes objects to fall towards Earth's centre, with acceleration due to gravity (g) being approximately 9.8 m/s² near Earth's surface.
Key detail
Gravitation also explains planetary motion, keeping planets in orbit around the sun and moons in orbit around planets.
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Quick notes
• Gravitation: universal attraction force.
• Proportional to masses, inversely to distance squared.
• Formula: F=G(m1×m2)/r².
• G = gravitational constant.
• Gravity: acceleration ~9.8 m/s² near Earth.
• Causes objects to fall towards Earth's centre.
• Explains planetary motion, orbits.
• Keeps planets around sun, moons around planets.