two uniform spheres, each with mass M and radius R touch each other.what is the magnitude of their gravitational force of attraction?
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Answer:
F = GM²/4R²
Explanation:
Force of gravitation between two objects as per the Newton's law of gravitation is given by,
F = GM1M2/R²
where M1 and M2 are the masses of objects and R is the distance between them.
Here R is equal to 2R as they are touching each other .
Therefore,
F = GMM/(2R)² = GM²/4R²
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