Question

Calculate the force of gravitation due to the Earth on A ball of 2kg mass lying on the floor consider the mass of earth=6*10^24kg radius of the earth=6400km and G=6.7*10^-11 Nm^2/kg​

Answer 1

F=GMm /R^2  M=Mass of the earth =6 x10*24kg  m=mass of the body=1kg,R= Radius of the earth=6.4 x10*3m,G=Gravitational constant=6.67 x10*-11Nm*2/kg*2   then F=6.67 x10*-11x6 x10*24 x1/6.4 x6.4 x10*3 x10*3 =6.67 x6 x10*13/6.4 x6.4 x10*6 =667 x6 x10*7/64 x64=0.97705 x10*7 =9.7705 x10*6N

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Answer 2

here you go... hope this might help you