Question

if the radius of the earth is halved and the mass is double then what will be the value of 'g' ? ( g = 9.8 m/s2 )

Answer 1

Answer:

g = $\frac{GxM}{R^{2} }$

G =  Gravitational constant

M = Earth Mass

R = Distance

9.8 = $\frac{GxM}{R^{2} }$

'g' = $\frac{Gx2M}{1/4R^{2} }$

so the value of 'g' is 9.8 x 2 or 19.6