Gravitation
 Universal law of Gravitation:
 Gravitational force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
 F ∝ M × m M and m are masses of two bodies.
 $F\propto \frac{1}{{r}^{2}}\phantom{\rule{0ex}{0ex}}F=\mathrm{G}\frac{Mm}{{r}^{2}}$
G = 6.673 × 10^{–11} Nm^{2} kg^{–2}

 Inverse square law
 Weight is the gravitational force on an object.
 The weightlessness in outer space happens because the weight of the orbiting body is used to provide the centripet…
To view the complete topic, please