Velocity of Gravity!!

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pratap nagar

nagpur

30th march 09

Series-Science in our daily life

article no 5--  Velocity of Gravitational force

My today's article includes a discussion about the velocity of Gravitational Force.

we know that velocity of light is nearly 300000km/sec. Acceleration due to gravity is appx.. 9.78m/sec2 at the equator and 9.83m/sec2  at the poles . free fall means when the body is attracted towards the center of the earth,the velocity by which it moves to the surface of the earth is known as the free fall. but it is in the absence of the air resistance. can we call this as the speed of gravity? the answer will be no. einstein said that the speed of gravity waves is equal to the velocity of light.  he said that in the fabric of space and time, if sun destroys at once,the ripples of gravity from the sun will travel to the earth at the vlocity of light and there will be darkness on the earth in about 8 mins. if the gravity travels at the velocity of light then 

but it is proved. 

Akshay Deoras