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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 Nm2 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…

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