Question

obtain the SI unit of gravitational constant G from the expression for gravitational force between two object​

Answer 1

Answer:

Nm2/kg2  (newton metre squared per kilogram squared)

Explanation:

From Newton's universal law of gravitation,

F=(G×m1×m2)/d2

where F = gravitational force

G = universal gravitational constant

m1 = mass of the first object

m2 = mass of the second object

d = distance between the objects

Hence, universal gravitational constant, G=(F×d2)/(m1×m2)

Unit of F = newton (N)

Unit of d = metre (m)

Unit of m1 = Unit of m2 = kilogram (kg)

Hence, unit of G = Nm2/kg2 (newton metre squared per kilogram squared).