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What is gravitational force?
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Gravitational force is the attraction between two masses due to their mass. It is a fundamental force of nature.
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Who formulated the law of universal gravitation?
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Sir Isaac Newton formulated the law of universal gravitation.
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What is the formula for gravitational force?
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The formula is F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers of the two masses.
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What is the value of the universal gravitational constant G?
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The value of G is approximately 6.674 × 10^(-11) N(m/kg)^2.
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How does distance affect gravitational force?
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Gravitational force decreases with the square of the distance between two objects. Doubling the distance decreases the force by a factor of four.
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How does mass affect gravitational force?
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Gravitational force is directly proportional to the product of the two masses involved. Increasing the mass increases the force.
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What is the significance of Newton's law of gravitation?
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Newton's law of gravitation allowed for the understanding of various celestial mechanics, including the orbits of planets and the behavior of tides.
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What is weight and how is it related to gravity?
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Weight is the gravitational force exerted on an object by the Earth. It is calculated as the mass of the object multiplied by the acceleration due to gravity.
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What is free fall?
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Free fall is the motion of an object under the influence of gravitational force only, with no other forces acting on it.
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What is the difference between weight and mass?
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Mass is a measure of the amount of matter in an object, while weight is the force exerted by gravity on that mass.
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What influences the gravitational pull of a planet?
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The mass of the planet and the distance from its center determine the gravitational pull it exerts.
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How does gravity affect time according to general relativity?
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According to general relativity, gravity can bend spacetime, affecting the passage of time. Time runs slower in stronger gravitational fields.
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What role does gravity play in the structure of the universe?
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Gravity is responsible for the structure and evolution of the universe, including the formation of stars, galaxies, and the large-scale structure of the cosmos.
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What is escape velocity?
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Escape velocity is the minimum speed needed for an object to escape from the gravitational influence of a celestial body without further propulsion.
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Why does the Moon have less gravity than Earth?
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The Moon has less gravity than Earth because it has a smaller mass.
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