Class 9 Physics Chapter 10 | Universal Law of Gravitation - Gravitation

👉Previous Video:    • Class 9 Physics Chapter 10 | Gravity - Gra...   👉Next Video:    • Class 9 Physics Chapter 10 | Contributions...   ✔️📚👉 Watch Full Free Course: https://www.magnetbrains.com ✔️📚👉 Get Any Class & Subject's Topic Video Here:- https://www.magnetbrains.com/get-topi... ✔️📚👉 Get All Subjects Playlists: ​https://www.pabbly.com/out/all-videos... ✔️📚👉 Grab Notes by Expert Teachers Here: https://www.pabbly.com/out/magnet-brains ✔️📚👉 Place Your Queries For Books Here: https://www.magnetbrains.com/booklet ✔️📚👉 Get Books Prepared by Our Expert Teachers at Your Door Step: https://www.magnetbrains.com/book_pur... =============================================== 📢 Full Playlist Link:   • Class 9 Physics (New Session 2023-24) | Co...   ✅ In this video, ✔️ Class: 9th ✔️ Subject: Physics ✔️ Chapter: Gravitation (Chapter 10) ✔️ Topic Name: Universal Law of Gravitation ✔️ Topics Covered in This Video: Chapter 10 Gravitation - Universal Law of Gravitation, Numericals =============================================== 00:00 Introduction: Universal Law of Gravitation 00:40 Universal Law of Gravitation 11:58 Numericals 23:12 Website Overview =============================================== 📢 🔥 Available (Kindergarten to 12th) all Video Subject wise Playlist https://www.pabbly.com/out/all-videos... Why study from Magnet Brains? Magnet Brains is an online education platform that helps give You NCERT/CBSE curriculum based free full courses from Kindergarten to Class 12th so that you can perform well in any and all exams you give in your academic career. 👉 Contact us 🤑🤑 ➡️ Connect with us : magnetbrainsbhopal@gmail.com ➡️ Website : https://www.magnetbrains.com/ ➡️ Subscribe to us on YouTube: https://www.youtube.com/MagnetBrainsE... ➡️ Facebook :   / magnet-brains-education-110955641184512   ➡️ Instagram :   / magnetbrains   ➡️ Telegram : https://t.me/magnetbrainsbhopal Numericals Question. Calculate the force of gravitation are earth on the ball of 1 kg mass lying on the ground? (Mass of earth = 6 x 1024 kg, Radius of earth = 6.4 x 103 km and G = 6.67 x 10-11 Nm2/kg-1) Solution. F = GMm/r2 F = 6.67 x 10-11 x 1 x 6 x 1024 F = 9.8 N Question. Two particles A and B of mass m1 and m2 respectively are placed on some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be. Solution. F = Gm1m2 F = G 2 m1 x 2m2 F = G 4(m1 x m2 ) Question. The mass of sun is 2 x 1030 kg and the mass of earth is 6 x 1024 kg. If the average distance between the sun and the earth is 1.5 x 108 km. Calculate the force of gravitation between them. Solution. M1 = 2 x 1030 kg M2 = 6 x 1024 kg r = 1.5 x 108 km = 1.5 x 1011 G = 6.67 x 10-11 F = G x m1 x m2 / r2 F = 2 x 1030 x 6 x 1024 x 6.67 x 10-11 . Disclaimer: "This video is for educational and informational purposes only and is not intended to infringe on any copyrights. If you believe that this video has used any copyrighted material in a way that constitutes copyright infringement, please contact us at contact@magnetbrains.com and we will take appropriate action."