Fill in the Blanks
1. According to the law of gravitation, every body in the universe attracts every other body with a force that is directly proportional to the __________ and inversely proportional to the square of the distance between their centres.
2. If the distance between two bodies is doubled, the gravitational force between them decreases to __________ of its former value.
3. If the distance between two bodies is halved, the force of attraction between them increases to __________ its former value.
4. The acceleration due to gravity is inversely proportional to the __________ of the distance from centre of earth.
5. The force of attraction, which the earth exerts on a body, is called __________.
6. Spring balance is used to determine __________ of a body.
7. The point of body at which whole weight of the body seems to act is called __________.
8. If the force acting on a body is equal to its weight then the acceleration produced in the body is equal to __________.
9. The centre of gravity of a body of rectangular shape is the point where its __________ intersect each other.
10. __________ is the centre of solar system.
11. The distance from the centre of the earth to the centre of the moon is called __________.
12. The time taken by the earth to complete one revolution around the sun is __________.
13. The direction of weight is always toward the centre of the __________.
14.Newtonmade the hypothesis that every body in the universe __________ the other body.
15. The moon is freely falling to __________.
16. The time taken by the moon to complete one revolution around the earth is __________.
17. The acceleration of the moon is __________.
18. The moon’s orbit is about __________.
19. Acceleration due to gravity decreases at __________ rate for a point above the surface of earth then for the same point below the surface of the earth.
20. Weight of a body is a __________ quantity.
21. The __________ is responsible for the motion of the planets around the sun.
22. Artificial gravity is produced in a satellite by spinning its own __________.
23. The value of ‘g’ is inversely proportional to the __________ of the radius of the earth.
24. If the mass of earth becomes four times then the value of ‘g’ will be __________.
25. The acceleration due to gravity on moon is __________ the acceleration due to gravity on the surface of the earth.
26. Acceleration due to gravity at the centre of the earth is __________.
27. The weight of a body at the pole is __________ than at equator.
28. The gravitational pull at equator is __________ than at poles.
29. The force required to prevent a body from falling or accelerating in a frame of reference is called the __________ of the body.
30. An astronaut in a satellite orbiting around the earth experiences a state of __________ because the satellite orbiting with a centripetal acceleration equal to ‘g’.
31. Artificial gravity is produced in the satellite to overcome the __________ in the satellite.
32. Artificial gravity is produced in the satellite by __________ it about its own axis.
33. The value of the average density of the earth is __________ kg/m3.
34. The dimension of gravitation constant is __________.
35. The expression for the frequency of rotation of the satellite to produce artificial gravity is __________. Earlier vintage of hippocratic books, to https://pro-essay-writer.com fit a little shelf
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MSCQs of Chapter 5 – Torque, Angular Momentum and Equilibrium