Circular motion Definition and 1000 Threads

In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. The equations of motion describe the movement of the center of mass of a body. In circular motion, the distance between the body and a fixed point on the surface remains the same.
Examples of circular motion include: an artificial satellite orbiting the Earth at a constant height, a ceiling fan's blades rotating around a hub, a stone which is tied to a rope and is being swung in circles, a car turning through a curve in a race track, an electron moving perpendicular to a uniform magnetic field, and a gear turning inside a mechanism.
Since the object's velocity vector is constantly changing direction, the moving object is undergoing acceleration by a centripetal force in the direction of the center of rotation. Without this acceleration, the object would move in a straight line, according to Newton's laws of motion.

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  1. tiny-tim

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  2. T

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  4. P

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  5. D

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  6. S

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  7. C

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  8. R

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  9. D

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  10. Z

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  11. S

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  12. L

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  13. U

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  14. U

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  15. P

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  16. P

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  17. T

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  18. J

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  19. E

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  20. W

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  21. N

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  22. D

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  23. T

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  24. A

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  25. I

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  26. I

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  29. N

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  30. N

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  31. C

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  33. B

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  35. V

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  40. G

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  41. I

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  42. B

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  43. E

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  44. M

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  46. C

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  47. L

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  48. S

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  49. B

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  50. F

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