Question

derive expression for force of attraction between two bodies and then define gravitational constant​

Answer 1

Gravitational law

Explanation:

The gravitational force acting between two objects is directly proportional to the product of masses and inversely proportional to the square of distance between them. It is given by :

$F\propto m_1m_2$

$F\propto \dfrac{1}{r^2}$

Collectively,

$F\propto \dfrac{m_1m_2}{r^2}$

$F=G \dfrac{m_1m_2}{r^2}$

G is the universal gravitational constant. Its value is $6.67\times 10^{-11}\ Nm^2/kg^2$. It is given by Sir Issac Newton. Hence, this is the required solution.

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Gravitational law

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Answer 2

Answer:

Gravitational law

Explanation:

The gravitational force acting between two objects is directly proportional to the product of masses and inversely proportional to the square of distance between them. It is given by :

F\propto m_1m_2F∝m1m2

F\propto \dfrac{1}{r^2}F∝r21

Collectively,

F\propto \dfrac{m_1m_2}{r^2}F∝r2m1m2

F=G \dfrac{m_1m_2}{r^2}F=Gr2m1m2

G is the universal gravitational constant. Its value is 6.67\times 10^{-11}\ Nm^2/kg^26.67×10−11 Nm2/kg2 . It is given by Sir Issac Newton. Hence, this is the required solution.

Learn more,

Gravitational law