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Motion In Straight Line

Question
CBSEENPH11017591

How much weight of a body of mass 25 kg at the equator will change when the earth stops to revolve about its own axis?

Solution
Mass of the body = 25 kg
If the earth stops to revolve, the acceleration due to gravity will increase by Rω2. 
Therefore, the weight of body will increase by mRω2.
Thus increase in weight is, 
          increment straight W space equals space mRω squared 
         space space space space space space space space space space equals 25 cross times 6.4 cross times 10 to the power of 6 cross times open parentheses fraction numerator 2 straight pi over denominator 86400 end fraction close parentheses squared 
                asymptotically equal to space 0.845 space straight N