Question

Show that S.I unit of gravitations constant G is Nm²kg_² from Newton,s law of gravitation.

Answer 1

Answer:

SI units:-

F=force(N) ; d= distance(metre) ; m=mass(kg)

DERIVATION:-

F=G M×m/d^2

F×d^2=G M×m

G=F d^2/M×m

G=Nm^2/kg^2

G=Nm^2 kg^-2

Therefore,the Si unit of the universal gravitation constant(G) is Nm^2 kg ^-2.