Page 55 - Force 10
P. 55
To Calculate the Value of g:
Value of universal gravitational constant, G = 6.67 × 10 –11 N m / kg ,
2
2
Mass of the earth, M = 6 × 10 24 kg, and
Radius of the earth, R = 6.4 × 10 m.
6
Putting all these values in equation (iii), we get:
g =
2
6.67 × 10 −11 × 6.67 × 10 24
⇒ g =
6 2
(6.4×10 )
= 9.8 m/s 2
2
Thus, the value of acceleration due to gravity of the earth, g = 9.8 m/s .
