Physics-
General
Easy

Question

If the radius of the earth be increased by a factor of 5, by what factor its density be changed to keep the value of g the same?

  1. 1/25    
  2. 1/5    
  3. 1 divided by square root of 5    
  4. 5    

hintHint:

g=(GM)\R^2

The correct answer is: 1/5


    g=(GM)/R^2

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