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Q4. Solve the following numerical questions. Two identical balls of masses 1000kg each have distance of 50m between their centers. Find the gravitational force between the balls. Two stars of masses 2×〖10〗^10 kg and 4×〖10〗^20 kg experience gravitational force of 1000N. Find the separation between the two stars? Calculate the value of g at the height of 1500km above the surface of earth? A geostationary satellite revolves around the earth in an orbit of the radius 42000km. Find the value of g and orbital speed at this height? Value of g on earth surface is 9.8〖ms〗^(-2). What is the value of g on a planet whose mass is five times the mass of earth and its radius is twice the radius of earth? What is the weight of 130kg body on this planet? Calculate orbital speed of satellite orbiting around the earth at the height of 6400km? 9th physics chapter 05 Gravitational field class 9 physics | matric mart 1 gravitational field ch 9 | sabaq in urdu hindi GRAVITATIONAL FIELD According to the Newton's law of gravitation, the gravitational force between a body of mass m and the Earth is given by where Me is the mass of the Earth and r is the distance of the body from the centre of the Earth. The weight of a body is due to the gravitational force with which the Earth attracts a body. Gravitational force is a non-contact force. For example, the velocity of a body, thrown up, goes on decreasing while on return its velocity goes on increasing. This is due to the gravitational pull of the Earth acting on the body whether the body is in contact with the Earth or not. Such a force is called the field force. It is assumed that a gravitational field exists all around the Earth. This field is directed towards the center of the Earth as shown by arrows in figure 5.3. The gravitational field becomes weaker and weaker as we go farther and farther away from the Earth. In the gravitational field of the Earth 1. What is gravitational field? 2. What is field force? 3. What is gravitational field strength? 4. What is gravitational force? 5. Gravitational field 6. Gravitational field in urdu 7. Gravitational field in hindi 8. Gravitational field class 9 9. Gravitation field 9th class physics 10. Gravitational field class 9th physics 11. Gravitational field class 9 12. Gravitation field matric part 1 13. Gravitational field matric part I 14. Gravitational field grade 9 15. Gravitation field sabaq 16. Gravitational field khan 17. Gravitational field haytham tai 18. Gravitational field academy 19. Gravitational field hidi lecture 20. Gravitational field 9th class physics chapter 5 21. Gravitational field dont memorise it from book 22. Field force in urdu 23. Field force in hindi 24. Field force class 9 25. Field force 9 class physics chapter 5 26. 9th class physics chapter 5 27. Gravitational field strength 28. Gravitational field strength in urdu 29. Gravitational field strength in hindi 30. Gravitational field strength class 9 31. Gravitational field strength 9 class 32. Gravitation field strength sabaq 33. Gravitational field strength 34. Gravitational field strength matric part 1 35. Gravitational field strength ch 5 class 9 36. Gravitational field strength haytham tai 37. Gravitational field strength khan 38. Gravitational field strength academy 39. Gravitational force 40. Gravitational force in urdu Most related searches 9th class physics chapter 5 9th class physics ch 5 9th class physics 9th physics chapter 5 9th physics ch 5 9th physics physics class 9 chapter 5 physics class 9 physics 9th matric part 1 physics physics matric part 1 part 1 physics physics part 1 physics matric part 1 physics matric part 1 chapter 5 physics matric part 1 ch 5 part 1 physics part 1 physics chapter 5 9 class physics 9 class physics chapter 5 9 class physics ch 5 9 class matric part 1 part 1 matric physics sindh board kpk board punjab board all boards Karachi board #sirluqmancomputer #sirluqmanphysics #physics #class9 #9thclassphysics #9thphysics #matricpart1 #matricpart1physics #matricphysicspart1 #atifahmadofficial #sindhBoard #gravitationalField #urdu #hindi #freeonlineclasses #onlinephysicslecture 10th class physics guess paper 2023 urdu medium,10th physics guess paper 2023