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Question 1

State the universal law of gravitation.

Answer

Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the distance between them .

For two objects of masses m1 and m2 and the distance between them r, the force (F) of attraction acting between them is given by the universal law of gravitation as:

Where, G is the universal gravitation constant given by:

G = 6.67 x 10-11 Nm2 kg-2

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