. Determine the value and units of universal Gravitational constant, G?
Solution:
Gravitational force
So, gravitational force on an object of mass m near the earth's surface
Near the earth's surface we can assume distance between the object and the centre of the earth as,
d =Radius of the earth,
The mass of the earth,
So, the value of gravitational constant,
Gravitational force
Unit of F = Newton(N)
Unit of mass = Kg
Unit of d = m
Unit of G = Nm2 Kg-2
So, gravitational force on an object of mass m near the earth's surface
Near the earth's surface we can assume distance between the object and the centre of the earth as,
d =Radius of the earth,
The mass of the earth,
So, the value of gravitational constant,