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Saturday, October 9, 2010

Gravitational forces_Earth's rotation

The Earth rotates with a period of 24 hours. On Earth surface every object is firmly attached to the ground. Any satellite close to the Earth surface will have a period of 1.4 h.If the Earth rotates with increasing angular speed , the objects on Earth surface will be airbone when the centripetal acceleration is equal to the gravitational field strength on the surface.