Gravitation - One Shot Revision | Class 9 Physics Chapter 10 (2022-23)
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- Опубликовано: 31 июл 2024
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✅ In this video,
✔️ Class: 9th
✔️ Subject: Science (Physics)
✔️ Chapter: Gravitation (Chapter 10)
✔️ Topic Name: Gravitation - One Shot Revision | Class 9 Physics Chapter 10 (2022-23)
✔️ Topics to be Covered by Vibhuti ma'am: This video covers Gravitation - One Shot Revision | Class 9 Physics Chapter 10 (2022-23)
===============================================
00:00 Introduction
03:03 Gravitational force
11:44 Universal law of Gravitation
41:12 Numericals
41:16 Kepler's law of planetary motion
01:01:45 Kepler's Second Law of Motion
01:02:13 Kepler's Third Law of Planetary Motion
01:04:44 Free fall and Acceleration due to Gravity (g)
01:25:36 Calculation of Acceleraion due to Gravity
01:26:30 Variation of Acceleration due to Gravity (g)
01:32:39 Equations of Motion for Freely Fall Bodies
01:39:07 Numericals
01:49:18 Mass and Weight
01:55:36 Difference Between Mass and Weight
01:56:14 Weight of an Object on the Moon
02:03:34 Numericals
02:06:53 Websites Overview
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Ma'am,
The force between two objects is inversely proportional to the square of their distances, so how can earth and moon have an attractive force with such a great distance?
@@niyamathews1761 correct
Because of the centripetal and centrifugal force in your ncert book it is all given in the 1st and 2nd page
Hope it will help
The force between two objects is alps directly proportional to the product of the masses of the two object. If the mass is doubled, the force between two pbjects is also doubled.
See there masses also
Mass of earth is 6×10^24 kg
Mass of moon is 7×10^21 kg
You can see the difference.. with this centrepetel force of earth is greater than the moon therefore moon revolves in the same orbit...
As the mass of the objects is huge the gravitation is also huge
Mam humne padha ki dono object equal gravitational force lagayenge
Then eart jab sun ke pas aaya to uski velocity increase ku hui?
When apple 🍎fallen why he didn't give it to his mother or father 😂instead of thinking so much of gravity 😒
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See full explanation
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And in calculation of acceleration due to gravity there it needs to be 6.7*10^11nm^2*kg*6*10^24kg/{6.4*10^6m}^2
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Thumbnail:: for Board Exam .
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How we can learn equations of motion due to gravity
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Chapter begins from 3:00
Thank me later..😜❤️
Thanks mam for clearing all doubts of this chapter
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1:20:07 accceleration caused due to gravity is the same i.e 10 m/s for all objects. Objects with higher mass also fall with the same speed like objects with lower mass when no other force other than gravitational force is acting upon it.
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