Question

Please someone help me understand this question ​

Answer 1

$\\ \sf\longmapsto F=\dfrac{Gm_1m_2}{r^2}$

• m1 and m2 has same units let both be m

$\\ \sf\longmapsto F=\dfrac{Gm^2}{r^2}$

$\\ \sf\longmapsto G=\dfrac{Fr^2}{m^2}$

SI units:-

• F=Newton (N)
• r=metre(m)
• mass=m=kg

$\\ \sf\longmapsto G=\dfrac{Nm^2}{kg^2}$

Option C is correct