Question

answer both question and explain clearly​

Answer 1

Explanation:

already answered in before question.

Answer 2

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We know that g= GM/r²

Also, SI unit of-g=m/s² M=kg,r=m

SI unit of G = {(m/s²)(m²)}/kg

=[(kg)(m/s²)](m²)/kg²

=Nm²/kg²

Newton's law of universal gravitation states that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

F∝Mm. {M and m be the mass of the 2 body's}

F∝ 1/r²

F∝ Mm/r²

F=G{(Mm)/r²} {G Gravitation constant}