State the universal law of gravitation.
Q.1. State the universal law of gravitation.
Ans. Every particle in this universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres.
Q.2. Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.
Ans. The formula is F: GMm/ R² where M is the mass of the earth, m is the mass of the object on the surface of the earth and R is the radius of the earth.
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